Question

Triangle- interior angle
Please help !

Answer 1

x = 25

<B = 120 degrees

<C = 30 degrees

Explanation:

Total angle measure of a triangle - 180 degrees

Add all the angles together to find the value of x

30 + 4x + 20 + x + 5 = 180

55 + 5x = 180

55 - 55 + 5x = 180 - 55

5x = 125

`(5x)/(5) = (125)/(5)`

x = 25

<B = 4(25) + 20

<B = 100 + 20

<B = 120

<C = 25 + 5

<C = 30