Geometry Review For Grade 8: Circles + Angle Measurement

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Geometry to me is among the simplest subjects in Mathematics and this is because it is more practical and uses tools. How about you? Complete this online review assessment to below and find out how good you are at reviewing the facts of grade 7 Geometry.

• 1.

Name the Angle

• A.

HGF OR FGH

• B.

HFG OR GFH

• C.

HFG OR GFH

A. HGF OR FGH
Explanation
The given question is asking for the name of the angle formed by the points H, G, and F, or the angle formed by the points F, G, and H. Both of these angles can be named as HGF or FGH interchangeably.

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• 2.

Find the Area of the Circle. Round to the nearest tenth.

• A.

A= 157 squared cm

• B.

A= 31.4 squared cm

• C.

A= 15.7 squared cm

• D.

A = 78.5 squared cm

D. A = 78.5 squared cm
Explanation
The correct answer is A = 78.5 squared cm. This is the correct answer because the area of a circle can be calculated using the formula A = πr^2, where π is approximately 3.14 and r is the radius of the circle. By substituting the given value of A into the formula, we can solve for r. The resulting value of r is then used to calculate the area of the circle. In this case, the resulting value of A is 78.5 squared cm.

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• 3.

Name the Angle

• A.

TVU ORUVT

• B.

VUT OR TUV

• C.

VTU OR UTV

B. VUT OR TUV
• 4.

If ACD measure 52,what is measurement  in degrees of DCB

• A.

108 degrees

• B.

128 degrees

• C.

38 degrees

• D.

308 degrees

B. 128 degrees
Explanation
If ACD measures 52 degrees, then DCB is the supplementary angle to ACD. Since supplementary angles add up to 180 degrees, the measurement of DCB would be 180 - 52 = 128 degrees.

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• 5.

True or False. The radius of the circle is 4m

• A.

True

• B.

False

A. True
Explanation
The given statement is "The radius of the circle is 4m." The correct answer is "True." This means that the statement is correct and the radius of the circle is indeed 4 meters.

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• 6.

Find the Circumference of the Circle. Round to the nearest tenth.

• A.

C= 75.36 ft

• B.

C=75. 4 ft

• C.

C= 37.7 ft

• D.

C= 452.2 ft

B. C=75. 4 ft
Explanation
The circumference of a circle is the distance around the outside edge of the circle. In this case, the circumference is given as 75.4 ft. This means that if you were to measure all the way around the circle, you would find that it is approximately 75.4 feet long.

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• 7.

FIND THE MEASURE OF ANGLE XUSE A PROTRACTOR TO MEASURE THE ANGLE IF NEEDED

• A.

X = 100 degrees

• B.

X = 105 degrees

• C.

X = 15 degrees

• D.

X = 25 degrees

• E.

ANGLE X IS BETWEEN 120 AND 130 DEGREES

• F.

X = 285 degrees

C. X = 15 degrees
• 8.

FIND THE MEASURE OF NOTE: FIND THE SUM OF THE INTERIOR ANGLE MEASURES,THEN DETERMINE THE INDIVIDUAL ANGLE MEASURES

• A.

B=80

• B.

A=60

• C.

B=60

• D.

A=80

• E.

B=20

• F.

A=40

A. B=80
B. A=60
Explanation
NOTE: FIND THE SUM OF THE INTERIOR ANGLE MEASURES OF A TRIANGLE, THEN DETERMINE THE INDIVIDUAL ANGLE MEASURES

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• 9.

IF GIVEN TWO ANGLES THAT ARE SUPPLEMENTARY,IF ONE ANGLE IS A RIGHT ANGLE, WHAT IS THE MEASURE OF THE OTHER ANGLE?

• A.

270 DEGREES

• B.

90 DEGREES

• C.

45 DEGREEES

• D.

60 DEGREES

B. 90 DEGREES
Explanation
If two angles are supplementary, it means that their sum is equal to 180 degrees. In this case, one of the angles is a right angle, which measures 90 degrees. Therefore, the other angle must be equal to 180 degrees minus 90 degrees, which equals 90 degrees.

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• 10.

If two angles are complementary and one of them is 77°, what is the size of the other angle?

• A.

57 DEGREES

• B.

167 DEGREES

• C.

13 DEGREES

• D.

103 DEGREES

C. 13 DEGREES
Explanation
Complementary angles are two angles that add up to 90 degrees. In this case, one angle is given as 77 degrees. To find the other angle, we subtract 77 degrees from 90 degrees (90 - 77 = 13 degrees). Therefore, the size of the other angle is 13 degrees.

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• Current Version
• Mar 21, 2023
Quiz Edited by
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• Mar 19, 2014
Quiz Created by
Fpaige

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