Free Printable Angle Basics and Relationships

1.

A right angle measures:

a)

90 degrees

b)

Less than 90 degrees

c)

Greater than 90 degrees

2.

An obtuse angle measures:

a)

Less than 90 degrees

b)

Greater than 90 degrees

c)

90 degrees

3.

An acute angle measures:

a)

90 degrees

b)

Greater than 90 degrees

c)

Less than 90 degrees

4.

This picture represents what type of angle?

a)

Obtuse Angle

b)

Right Angle

c)

Acute Angle

5.

This picture represents what type of angle?

a)

Right Angle

b)

Obtuse Angle

c)

Acute Angle

6.

This picture represents what type of angle?

a)

Right Angle

b)

Acute Angle

c)

Obtuse Angle

7.

What could be the measurement of an obtuse angle?

a)

90

b)

20

c)

130

d)

180

8.

Which could be the measurement of an acute angle?

a)

0

b)

35

c)

180

d)

90

9.

What is the measurement of a straight angle?

a)

100

b)

180

c)

360

d)

240

10.

Which type of angle is pictured?

a)

Acute

b)

Right

c)

Obtuse

d)

Straight

11.

A 123 degree angle is called a(n)...

a)

straight angle

b)

right angle

c)

obtuse angle

d)

acute angle

12.

Identify all the ACUTE angles...

a)

37^o

b)

135^o

c)

23^o

d)

4^o

e)

175^o

13.

What is an example of a pair of complementary angles?

a)

13° and 45°

b)

10° and 170°

c)

81° and 9°

d)

90° and 3°

14.

What type of angles are these?

a)

Adjacent Angles

b)

Linear Pair

c)

Complementary Angles

d)

Supplementary Angles

e)

Vertical Angles

15.

Which angles are vertical angles?

a)

$\angle8\ \ and\ \angle7$

b)

$\angle8\ and\ \angle6$

c)

$\angle8\ and\ \angle5$

16.

Which angle is a linear pair with $\angle1$ ?

a)

$\angle2$

b)

$\angle3$

c)

$\angle4$

d)

$\angle5$

e)

$\angle6$

17.

Which angle is a vertical angle to with $\angle7$ ?

a)

$\angle1$

b)

$\angle5$

c)

$\angle3$

d)

$\angle6$

e)

$\angle9$

18.

∠7 and ∠8 are _______________

a)

Vertical

b)

Nothing

c)

Adjacent

d)

Supplementary

19.

What angle is vertical to angle 2?

a)

∠4

b)

∠1

c)

∠2

d)

∠5

20.

Which are pairs of vertical angles?

a)

∠COB and ∠COA

b)

∠AOD and ∠AOC

c)

∠COB and ∠AOD

d)

∠BOD and ∠AOD

21.

Which are pairs of adjacent angles?

a)

∠COB and ∠DOA

b)

∠AOD and ∠AOC

c)

∠COB and ∠AOD

d)

∠BOD and ∠AOC

22.

Which names a pair of adjacent angles?

a)

∠CXD and ∠FXE

b)

∠CXF and ∠DXE

c)

∠CXD and ∠DXE

23.

Vertical angles are always

a)

acute

b)

total 180 degrees

c)

congruent (equal measures)

d)

adjacent angles

24.

Which angle is a linear pair with $\angle5$ ?

a)

$\angle2$

b)

$\angle3$

c)

$\angle4$

d)

$\angle9$

e)

$\angle6$

25.

What type of angles are these? (select 3)

a)

Adjacent Angles

b)

Linear Pair

c)

Complementary Angles

d)

Supplementary Angles

e)

Vertical Angles

26.

Supplementary angles always add up to

(a)

27.

Complementary angles always add up to

(a)

28.

Which are pairs of vertical angles?

a)

∠COB & ∠COA

b)

∠AOD & ∠AOC

c)

∠COB & ∠AOD

d)

∠BOD & ∠AOD

29.

The relationship of these two angles

a)

Complementary

b)

Supplementary

c)

Neither

30.

Are these angles an example of complementary, supplementary, or neither?

a)

Complementary

b)

Supplementary

c)

Neither

31.

What are vertical angles?

a)

Angles that are adjacent to each other

b)

Angles that add up to 180°

c)

Angles that are opposite of each other when lines intersect

d)

Angles that add up to 90°

32.

Which angles are vertical angles?

a)

$\angle8\ \ and\ \angle7$

b)

$\angle8\ and\ \angle6$

c)

$\angle8\ and\ \angle5$

33.

Name the angle form by lines DE and EF in the long form.

a)

∠D

b)

∠f

c)

∠FED

d)

∠FDE

34.

Name the angle form by lines KL and ML in the long form.

a)

∠LMK

b)

∠KML

c)

∠KLM

35.

Name the angle form by lines XY and YZ in the long form.

a)

∠YZX

b)

∠y

c)

∠XYZ

36.

Name the vertex of the angle.

a)

E

b)

F

c)

D

d)

E, F, and D are vertices

37.

What is the correct definition of an angle?

a)

one single ray

b)

two rays that meet at a single endpoint (vertex)

c)

two lines that never intersect

d)

two rays that go in opposite directions

38.

This angle is written as......

a)

∠ABC

b)

∠ACB

c)

∠BCA

d)

∠CAB

39.

What is the arrow pointing to in the angle?

a)

a ray

b)

geometry

c)

vertex

d)

line

40.

Choose the correct name for the angle marked $\angle6.$

a)

$\angle KVL$

b)

$\angle LKV$

c)

$\angle V$

d)

$\angle JKV$

41.

Choose the correct name for the angle marked $\angle3.$

a)

$\angle V$

b)

$\angle4$

c)

$\angle IVH$

d)

$\angle JVI$

42.

This angle is written as......

a)

Angle ABC

b)

Angle ACB

c)

Angle BCA

d)

Angle CAB

Angle Basics and Relationships

Total questions: 42

Worksheet time: 1hrs 4mins

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