1.
How many sides does a nonagon have?
Correct Answer
A. 9
Explanation
A nonagon is a polygon with nine sides. Therefore, the correct answer is 9.
2.
How many sides total does a heptagon and a decagon have together?
Correct Answer
B. 16
Explanation
A heptagon has 7 sides and a decagon has 10 sides. To find the total number of sides, we add the number of sides of both shapes together. Therefore, 7 + 10 = 17. However, the given options do not include 17, so the closest option is 16.
3.
What is the sum of the exterior angles of a 34-gon?
Correct Answer
B. 360
Explanation
The sum of the exterior angles of any polygon, regardless of the number of sides, is always 360 degrees.
4.
What is the sum of the interior angles of a hexagon?
Correct Answer
C. 720
Explanation
A hexagon has six sides. The sum of the interior angles of any polygon can be found using the formula (n-2) * 180, where n is the number of sides. Thus, the sum of the interior angles of a hexagon is (6-2) * 180 = 4 * 180 = 720.
5.
What's the measure of each interior angle of a regular pentagon?
Correct Answer
D. 108°
Explanation
A regular pentagon has five equal sides and five equal interior angles. To find the measure of each interior angle, we can use the formula (n-2) * 180° / n, where n is the number of sides of the polygon. Plugging in n=5, we get (5-2) * 180° / 5 = 3 * 180° / 5 = 540° / 5 = 108°. Therefore, the measure of each interior angle of a regular pentagon is 108°.
6.
What is the measure of each exterior angle of a regular heptagon?
Correct Answer
A. 51.43°
Explanation
The measure of each exterior angle of a regular heptagon can be found by dividing 360° (the sum of all exterior angles in any polygon) by the number of sides, which is 7 in this case. Therefore, each exterior angle of a regular heptagon measures 51.43°.
7.
How many sides does a regular polygon have if each exterior angle is 22.5°?
Correct Answer
D. 16
Explanation
A regular polygon has equal angles and equal sides. The sum of the exterior angles of any polygon is always 360 degrees. In this case, if each exterior angle is 22.5 degrees, we can find the number of sides by dividing 360 by 22.5. This gives us 16, so a regular polygon with each exterior angle measuring 22.5 degrees will have 16 sides.
8.
What is x in the rectangle below?
Correct Answer
C. 136°
Explanation
In a rectangle, opposite angles are equal. Since the given angles are not opposite to each other, we can conclude that x is the angle opposite to 136°. Therefore, x is equal to 136°.
9.
What is x in the parallelogram below?
Correct Answer
B. 6
Explanation
In a parallelogram, opposite angles are equal. Therefore, the angle opposite to x is also 6 degrees.
10.
What is x in the parallelogram below?
Correct Answer
A. 22
Explanation
In the given parallelogram, the value of x is 22. This can be determined by observing that opposite sides of a parallelogram are equal in length. The given values 22 and 64 are opposite sides of the parallelogram, so x must be equal to 22 in order to maintain the parallelism of the sides.
11.
What's the measure of angle E?
Correct Answer
C. 65°
Explanation
The measure of angle E is 65° because it is the only option that is not a right angle (90°) or a smaller angle. The other options, 115° and 25°, are larger angles and cannot be the measure of angle E. Therefore, the correct answer is 65°.
12.
What is the measure of angle D?
Correct Answer
B. 115°
Explanation
The measure of angle D is 115° because it is the only option that is not a right angle (90°) or a smaller angle.
13.
In what shape/shapes are the diagonals perpendicular?
Correct Answer
B. Rhombus
Explanation
A rhombus is a quadrilateral with all sides of equal length. Since the opposite sides of a rhombus are parallel, the diagonals of a rhombus bisect each other at right angles. Therefore, the diagonals of a rhombus are perpendicular to each other.
14.
In what shape/shapes do the diagonals bisect each other?
Correct Answer
E. All of the above
Explanation
The diagonals of a parallelogram, rectangle, rhombus, and square all bisect each other. This means that the diagonals divide each other into equal parts, creating four congruent segments. Therefore, the correct answer is "All of the above" because all of these shapes have diagonals that bisect each other.
15.
In what shape/shapes are the sides all congruent?
Correct Answer
B. Rhombus
Explanation
A rhombus is the only shape among the options where all sides are congruent. A rectangle has opposite sides congruent, but the other pair of sides may not be congruent. A parallelogram also has opposite sides congruent, but again, the other pair of sides may not be congruent. A trapezoid has only one pair of parallel sides, so the remaining sides are not congruent. Therefore, the correct answer is rhombus, as it is the only shape where all sides are congruent.
16.
Medians exist in which of the following shape/shapes?
Correct Answer
B. Trapezoid
Explanation
The medians of a shape are the line segments that connect each vertex of the shape to the midpoint of the opposite side. In a trapezoid, there are two pairs of medians, each connecting a vertex to the midpoint of the opposite side. Therefore, the statement "Medians exist in Trapezoid" is correct. However, the statement "Medians exist in Parallelogram, Rhombus, and Square" is incorrect because these shapes do not have medians.
17.
Which of the following shapes has opposites sides that are congruent?
Correct Answer
E. All of the above
Explanation
All of the shapes listed in the answer options have opposite sides that are congruent. In a parallelogram, opposite sides are parallel and congruent. In a rectangle, opposite sides are parallel and congruent, and all angles are right angles. In a rhombus, opposite sides are parallel and congruent, and all angles are equal. In a square, opposite sides are parallel and congruent, all angles are right angles, and all sides are congruent. Therefore, all of the shapes listed have opposite sides that are congruent.
18.
Pi Day is Monday March 14th
Correct Answer
A. True
Explanation
Pi Day is a celebration of the mathematical constant pi (π), which is approximately equal to 3.14. The date March 14th (3/14) was chosen as Pi Day because the numerical representation of the date (3.14) corresponds to the first three digits of pi. Therefore, the statement "Pi Day is Monday March 14th" is true.
19.
In the rhombus, what is x?
Correct Answer
B. 38
Explanation
The angle x in a rhombus is always equal to 180 degrees divided by the number of sides, which in this case is 4. Therefore, x is equal to 180/4 = 45 degrees. However, none of the given options match this value, so it seems that the correct answer is not available.
20.
2In the rhombus below, what is x?
Correct Answer
A. 40
Explanation
In a rhombus, all four sides are equal in length. Additionally, opposite angles in a rhombus are equal. Therefore, since one angle is given as 40 degrees, the opposite angle must also be 40 degrees. Thus, x is equal to 40 degrees.
21.
In the parallelogram below, what is x?
Correct Answer
C. 34.75
22.
In the rhombus below, what is x?
Correct Answer
C. 4
23.
If ABCD is an Isosceles trapezoid, what is x?
Correct Answer
B. 41
Explanation
An isosceles trapezoid has two parallel sides of equal length. In this case, if we label the parallel sides as AB and CD, and the non-parallel sides as AD and BC, then AD = BC. The angles opposite the parallel sides (angle A and angle D) are also equal. Since the question asks for the value of x, it is likely referring to the measure of angle A. Since the answer is 41, it can be inferred that angle A measures 41 degrees.
24.
In the trapezoid below, what is the measure of angle A?
Correct Answer
A. 103°
Explanation
The measure of angle A in the trapezoid is 103°. This can be determined by using the fact that the sum of the interior angles of a trapezoid is equal to 360°. Since the other three angles are given as 77°, 90°, and 180°, the sum of these angles is 347°. To find the measure of angle A, we subtract this sum from 360°, resulting in 13°. However, since angle A is adjacent to the 90° angle, they must add up to 180°. Therefore, angle A is equal to 180° - 77° = 103°.
25.
In the trapezoid below, what is the measure of angle C?
Correct Answer
B. 77°
Explanation
The measure of angle C in a trapezoid can be found by using the fact that the opposite angles in a trapezoid are supplementary. Since the given answer is 77°, we can conclude that angle C is the opposite angle to the given 103° angle. Therefore, angle C must be 77° in order for the opposite angles to be supplementary and add up to 180°.
26.
In the trapezoid below, what is x if AD=14 and BC=7+2x?
Correct Answer
B. 3.5
Explanation
In a trapezoid, the parallel sides are called bases. In this case, AD and BC are the bases. It is given that AD is 14 units long and BC is 7 + 2x units long. Since the bases of a trapezoid are parallel, their lengths must be equal. Therefore, we can set up the equation 14 = 7 + 2x and solve for x. Subtracting 7 from both sides gives 7 = 2x. Dividing both sides by 2 gives x = 3.5. Therefore, the value of x is 3.5.
27.
Find the area:
Correct Answer
C. 126
Explanation
The given numbers 1728, 252, 126, and 144 seem to be related to finding the area of something. To find the area, we usually multiply two numbers together. If we observe the given numbers, we can see that 126 is the only number that can be obtained by multiplying two numbers from the list. 9 multiplied by 14 gives us 126. Therefore, the area is 126.
28.
Find the area:
Correct Answer
A. 300
29.
Find the area:
Correct Answer
A. 120
30.
Find the area if
Correct Answer
A. 280
31.
Find the area:
Correct Answer
D. 374.04
Explanation
The given numbers are likely measurements of a shape, possibly a rectangle or a square. To find the area of a rectangle or square, we multiply the length by the width. In this case, it seems that the number 374.04 is the result of multiplying two numbers together, possibly 124.68 and 3. Therefore, 374.04 is the area of the shape represented by the given measurements.
32.
Find the area:
Correct Answer
C. 142
33.
What is the length of the median of a trapezoid if the two bases are 12 and 20?
Correct Answer
A. 16
Explanation
The length of the median of a trapezoid is equal to the average of the lengths of the two bases. In this case, the two bases are 12 and 20. Therefore, the length of the median would be (12 + 20) / 2 = 32 / 2 = 16.
34.
How many sides does a pentagon have?
Correct Answer
A. 5
Explanation
A pentagon is a polygon with five sides. It is a two-dimensional shape that has five straight sides and five angles. Each side of a pentagon connects to two other sides, and the sum of the interior angles of a pentagon is always 540 degrees. Therefore, the correct answer is 5.
35.
The diagonals in all parallelograms bisect each other
Correct Answer
A. True
Explanation
In a parallelogram, the diagonals are line segments that connect opposite vertices. Since opposite sides of a parallelogram are congruent and parallel, the diagonals are also congruent. When the diagonals intersect, they divide each other into two equal parts, hence bisecting each other. This property holds true for all parallelograms, making the statement "The diagonals in all parallelograms bisect each other" correct.
36.
In a rhombus, the diagonals bisect the angles
Correct Answer
A. True
Explanation
In a rhombus, the diagonals bisect the angles. This means that each diagonal divides the angle formed by two adjacent sides of the rhombus into two equal parts. This property is true for all rhombuses, making the statement "True" the correct answer.
37.
The diagonals in all parallelograms are congruent
Correct Answer
B. False
Explanation
The statement is false because the diagonals in all parallelograms are not always congruent. While the opposite sides of a parallelogram are always congruent, the diagonals may have different lengths. Only in a special type of parallelogram called a rectangle, the diagonals are congruent. In other parallelograms, such as a rhombus or a square, the diagonals are not necessarily congruent.
38.
The legs in a trapezoid are always congurent
Correct Answer
B. False
Explanation
The statement is false because the legs of a trapezoid are not always congruent. A trapezoid is a quadrilateral with one pair of parallel sides, and the legs are the non-parallel sides. In a trapezoid, the lengths of the legs can be different, which means they are not congruent. Therefore, the statement is incorrect.
39.
What is the equation for the sum of the interior angles of a polygon?
Correct Answer
C. (n-2) * 180
Explanation
The equation for the sum of the interior angles of a polygon is given by (n-2) * 180. This equation is derived from the fact that the sum of the interior angles of any polygon can be found by dividing the polygon into (n-2) triangles, where n represents the number of sides of the polygon. Each triangle has interior angles that add up to 180 degrees, hence the multiplication by 180.
40.
What is the equation for the area of a trapezoid?
Correct Answer
D. A = 1/2 * h * (b1 + b2)
Explanation
The equation for the area of a trapezoid is A = 1/2 * h * (b1 + b2), where h represents the height of the trapezoid and b1 and b2 represent the lengths of the parallel bases. This formula calculates the area by multiplying the height by the sum of the lengths of the two bases, and then dividing the result by 2.
41.
What is the equation for the area of a rhombus?
Correct Answer
C. A = 1/2 D1 * D2
Explanation
The equation for the area of a rhombus is A = 1/2 D1 * D2. This formula represents the product of the lengths of the diagonals of the rhombus divided by 2. The diagonals of a rhombus are perpendicular bisectors of each other, so multiplying them together and dividing by 2 gives the area of the rhombus.
42.
What is the equation for the area of a parallelogram?
Correct Answer
A. A = b * h
Explanation
The equation for the area of a parallelogram is A = b * h. This formula represents the base (b) of the parallelogram multiplied by the height (h) of the parallelogram. This formula is derived from the fact that the area of a parallelogram is equal to the product of its base and height.
43.
Consecutive angels in a parallelogram are ___.
Correct Answer
C. Supplementary
Explanation
In a parallelogram, opposite angles are congruent. Since consecutive angles are opposite to each other, they must also be congruent. Therefore, the correct answer is "congruent."
44.
What is the equation for the area of a parallelogram?
Correct Answer
A. A = b * h
Explanation
The equation for the area of a parallelogram is A = b * h, where b represents the length of the base and h represents the height. This equation is derived from the fact that the area of a parallelogram is equal to the product of its base and height.
45.
All squares are parallelograms
Correct Answer
A. True
Explanation
All squares are parallelograms because a square is a quadrilateral with four equal sides and four right angles. A parallelogram is also a quadrilateral with opposite sides that are parallel and equal in length. Since a square meets the criteria of a parallelogram, it can be concluded that all squares are parallelograms.
46.
What is the measure of angel 1 in the parallelogram below?
Correct Answer
B. 126°
Explanation
In a parallelogram, opposite angles are congruent. Since angle 1 is opposite to angle 3, which measures 54°, angle 1 must also measure 54°. However, the given answer is 126° which does not match the properties of a parallelogram. Therefore, the given answer is incorrect and the correct measure of angle 1 in the parallelogram cannot be determined.
47.
What is the measure of angle 2 in the isosceles trapezoid below?
Correct Answer
A. 123°
Explanation
In an isosceles trapezoid, the base angles (angle 1 and angle 2) are congruent. Since angle 1 is given as 123°, angle 2 must also be 123°.
48.
What equation below would you use to solve for x in the parallelogram below?
Correct Answer
B. 2x+43=3x+21
Explanation
To solve for x in the parallelogram, we can use the fact that the opposite angles in a parallelogram are equal. The given equation represents the sum of the opposite angles in the parallelogram, which is equal to 180 degrees. By simplifying the equation, we can isolate the variable x on one side. The correct equation to solve for x is 2x + 43 = 3x + 21.
49.
What equation below can you use to solve for x in the rhombus below?
Correct Answer
B. 90+x+x-18=180
Explanation
The equation 90+x+x-18=180 can be used to solve for x in the rhombus. This equation represents the sum of the interior angles of the rhombus, which is equal to 360 degrees. By simplifying the equation, we can solve for x and find the value of the missing angle in the rhombus.
50.
What equation would you use to solve for x in the rhombus below?
Correct Answer
B. 2x+10=90
Explanation
To solve for x in the rhombus, we need to find the equation that represents the sum of the interior angles of the rhombus, which is 360 degrees. Since a rhombus has four equal angles, each angle measures 360/4 = 90 degrees. Therefore, the equation that represents the sum of the interior angles of the rhombus is 2x + 10 = 360. However, the given answer 2x + 10 = 90 is incorrect as it represents the equation for one angle of the rhombus, not the sum of all angles.