Angle Relationships Proficient Practice E-Learning

List two pairs of adjacent angles. ​ (a)  

• <4 and <5
• <1 and <3
• <3 and <5
• <4 and<2

The measure of ∠ABC is x° and the measure of ∠DBC is (3x + 10)°.

x=​ (a)   m<DBC=​ ​ (b)  

• 20
• 70
• 90
• 45
• 80

Angles 3 and 1 are ​ (a)  

• vertical angles
• linear pairs
• complementary
• no relationship

What is the value of x in <1?​ (a)  

• x=18
• x=180
• x=90
• x=10

What is the value of x?

• 15

• 16

• 18

• 19

Find the m∠1

• 67
• 113
• 180
• 23

Find the missing angle in the following figure.

• A
• B
• C
• D

True or False:

Vertical angles can be adjacent.

• True

• False

Find the value of x.

Mathematical Equivalence

ON

Find the measure of the adjacent angle.

• 39

• 51

• 45

• 90