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Angle Identification Worksheet

Identify and classify different types of angles (acute, obtuse, right, straight) and measure them using a protractor.

Grade 5 Math GeometryAnglesAngle Identification
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Includes

Multiple ChoiceFill in the BlanksShort AnswerTrue / FalseMatching

Standards

CCSS.MATH.CONTENT.4.G.A.1CCSS.MATH.CONTENT.4.MD.C.5

Topics

mathgeometryanglesgrade 5
7 sections · Free to use · Printable
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Angle Identification Practice

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Read each question carefully and follow the instructions. Identify the type of angle shown or described.

1. Which type of angle measures exactly 90 degrees?

a

Acute angle

b

Obtuse angle

c

Right angle

d

Straight angle

2. An angle that measures less than 90 degrees is called a(n)   angle.

a

Obtuse

b

Acute

c

Right

d

Straight

3. An angle that measures more than 90 degrees but less than 180 degrees is called an   angle.

4. A   angle forms a straight line and measures exactly 180 degrees.

5. Look at the angle below. What type of angle is it?

6. Identify the type of angle shown in the diagram.

7. All angles in a square are acute angles.

T

True

F

False

8. A straight angle is always formed by two rays pointing in opposite directions.

T

True

F

False

Match each angle type on the left with its correct description on the right.

9. Acute Angle

 

a. Measures exactly 90 degrees

10. Right Angle

 

b. Measures between 0 and 90 degrees

11. Obtuse Angle

 

c. Measures exactly 180 degrees

12. Straight Angle

 

d. Measures between 90 and 180 degrees