AnswersA. CostelloWCA 5324 Geometry 1st Nine Weeks 26-27Linear Pairs and Vertical Angles

Complementary and Supplementary Angles Answers

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Given: intersects at point C. Prove: DCB ECA

Question illustration
A
linear pair postulate
B
given
C
definition of complementary angles
D
congruent complements theorem
3
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Triangle ABC is a right triangle.

Question illustration
A
They are congruent.
B
They are complementary.
C
They are supplementary.
D
There is no relationship between them.
4

Right angle FCD intersects and at point C. FCE is congruent to ECD. ECD is complementary to DCB.

Question illustration
A
They are congruent and complementary.
B
They are congruent and supplementary.
C
They are complementary but not necessarily congruent.
D
They are supplementary but not necessarily congruent.
5

Angles 1 and 2 form a right angle.

Question illustration
A
linear
B
congruent
C
complementary
D
supplementary
6

Two lines are intersected by a third line.

Question illustration
A
2 5
Option A
B
2 is complementary to 5.
Option B
C
m2 = m8
Option C
D
2 is supplementary to 8.
Option D
7

Given:1 is complementary to 2. 2 is complementary to 3.Prove:m1 = m3

Question illustration
A
m1 = m2
Option A
B
m1 + m2 = 90°
Option B
C
m2 = m3
Option C
D
m2 + m3 = 180°
Option D
8

The figure shows three lines that intersect at point N.

Question illustration
A
42°
B
48°
C
132°
D
138°
9

Lines DE and AB intersect at point C.

Question illustration
A
12
B
25
C
38
D
52
10

Angle B measures 60°. What is the measure of the angle that is complementary to angle B?

A
30°
B
60°
C
120°
D
180°

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