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Triangle ABC is isosceles with angle B congruent to angle C. The measure of angle C is five times the measure of angle A. What is the number of degrees in the measure of angle B?

 Jan 1, 2021
 #1
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Angle B =Angle C = 4 x 20 = 80 degrees try that hope that helped!

 Jan 1, 2021
 #2
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Hello Guest!

 

Let's start by setting the measure of angle A as x. 

That would make angle C 5x, and since angle B is congruent to angle C, angle B is 5x too.

Angle A = x

Angle B = 5x

Angle C = 5x

 

The sum of the angles in a triangle is 180. 

So Angle A + Angle B + Angle C = 180.

x + 5x + 5x = 180

11x = 180

x = 180/11

 

Since we're looking for Angle B, we just do 180/11*5 = 900/11

 

I hope this helped :))))

 

=^._.^=

 Jan 1, 2021

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