1.
What is a ray?
Correct Answer
A. A part of line that has one fixed point.
Explanation
A ray is a part of a line that starts at a fixed point called the endpoint and extends infinitely in one direction. It has one fixed point, which is the endpoint, and it continues indefinitely in the other direction.
2.
What is a polygon with 9 sides called?
Correct Answer
B. Nonagon
Explanation
A polygon with 9 sides is called a nonagon. The prefix "non-" in nonagon means "nine," so a nonagon is a shape with nine sides. This term is commonly used in geometry to describe a specific type of polygon.
3.
What is a 10 sided polygon called?
Correct Answer
D. Decagon
Explanation
A 10-sided polygon is called a decagon.
4.
A trapezoid has
Correct Answer
D. All of the above
Explanation
The correct answer is "all of the above" because a trapezoid is defined as a four-sided closed shape with two parallel sides and two non-parallel sides. Therefore, all the given options are true for a trapezoid.
5.
Pick odd one out according to the geometrical shapes.
Correct Answer
B. Diamond
Explanation
The diamond is the odd one out because it is the only shape that is not a regular polygon. The triangle, circle, and square are all regular polygons with specific properties, such as equal sides and angles. However, a diamond is a quadrilateral with two pairs of equal adjacent sides, but its angles are not necessarily equal. Therefore, the diamond does not fit the pattern of the other shapes and is the correct answer.
6.
Which type of triangle has only two sides equal?
Correct Answer
A. Isosceles
Explanation
An isosceles triangle has only two sides equal. In an isosceles triangle, two sides are of equal length, while the third side is of a different length. This type of triangle can also have two equal angles opposite the equal sides. Equilateral triangles have all three sides and angles equal, scalene triangles have no sides or angles equal, and obtuse triangles have one angle greater than 90 degrees.
7.
The radius, the diameter and the chord are all parts of this geometrical shape.
Correct Answer
C. Circle
Explanation
The radius, diameter, and chord are all parts of a circle. The radius is the distance from the center of the circle to any point on its circumference. The diameter is the distance across the circle passing through its center, which is equal to twice the radius. The chord is a line segment that connects two points on the circumference of the circle. Therefore, the correct answer is circle.
8.
Which type of pyramid has six sides?
Correct Answer
A. Hexagonal
Explanation
A hexagonal pyramid has six sides. This is because a hexagon is a polygon with six sides, and when it is extended into a three-dimensional shape with a pointy top, it forms a hexagonal pyramid. The other options, heptagonal, septagonal, and square, have seven, seven, and four sides respectively, which do not match the description of a pyramid with six sides.
9.
What is the formula to find the area of a circle?
Correct Answer
B. πr²
Explanation
The formula to find the area of a circle is πr². This formula is derived from the fact that the area of a circle is equal to the product of π (pi) and the square of the radius (r). The symbol π represents the mathematical constant pi, which is approximately equal to 3.14159. Multiplying π by the square of the radius gives us the area of the circle.
10.
A point where two side of triangle meet to form an angle is called
Correct Answer
A. Vertex
Explanation
The correct answer is vertex. In a triangle, the vertex is the point where two sides of the triangle meet to form an angle. It is also known as the corner or the intersection point of the sides. The vertex is an important concept in geometry and is used to describe the angles and properties of triangles.