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3 years ago

if angle A and angle B are supplementary, and angle A and angle C are supplementary. What conclusion is valid

Mathematics

2 answers:

Fantom [35]3 years ago

6 0

Answer:

no angle c is not supplementary

Step-by-step explanation:

Angle A and angle B are supplementary

A+B=180° Equation 1

The measure of angle B is equal to four times the complement of angle A

The complement of angle A=90°-A

B=4(90°-A)

B=360°-4A

Substitute the value of B in equation 1

A+360°-4A=180°

-3A=-180°

A=60°

The measure of angle A=60°

B=360°-4A=360°-4(60°)=120°

The measure of angle B=120°

lana66690 [7]3 years ago

4 0

Answer:

angle A + angle B = 180°

angle A + angle C = 180°

subtracting angle A and 180• from both sides we get,

angle B = angle C

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$

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