SOLUTION: Given : Angle A and Angle B are supplementary; Angle A = 4(Angle B) Prove : Angle D =36 degrees

Algebra ->  Geometry-proofs -> SOLUTION: Given : Angle A and Angle B are supplementary; Angle A = 4(Angle B) Prove : Angle D =36 degrees      Log On


   

Question 958981: Given : Angle A and Angle B are supplementary; Angle A = 4(Angle B)
Prove : Angle D =36 degrees
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
A%2BB%2B180 Definition of supplementary
A=4B Given
Substitute,
4B%2BB=180
5B=180
B=180%2F5
B=36