Complementary and Supplementary Angles

Question 1

Let mA = 40°. If B is a complement of A, and C is a supplement of B, find these measures.

Revolt · Accepted Answer

50; 130

Question 2

mC = [___]°

Revolt · Accepted Answer

130

Question 3

additionreflexivesubstitutionsymmetric

Revolt · Accepted Answer

substitution

Question 4

123

Revolt · Accepted Answer

2

Question 5

mB = [___]°

Revolt · Accepted Answer

Part 1: 50; Part 2: 109507; 50

Question 6

Based on the diagram, which reason justifies this statement?If ∠CEF is complementary to ∠DCF, then∠DCF ≅ ∠FEG.

Revolt · Accepted Answer

Complements of the same angle are congruent.

Question 7

By the congruent supplements theorem, what can you conclude?

Revolt · Accepted Answer

FBC DBG

Question 8

complementarycongruentrightsupplementary

Revolt · Accepted Answer

supplementary; Selection 1: supplementary; Selection 2: 3 and 2; Selection 3: substitution; Selection 4: 2

Question 9

1 and 23 and 13 and 2

Revolt · Accepted Answer

3 and 2

Complementary and Supplementary Angles Answers