Question

Easy pointsWhat is m∠A ? Enter your answer in the box. °

Answer 1

I think you are trying to ask the value of x,

So, here it is,

By Angle Sum Property,
Sum of all angles of a triangle = 180°

So,
(3x + 13) + (x - 8) + x = 180°
3x + 13 + x - 8 + x = 180°
5x + 5 = 180°
5x = 175°
x = $\frac{175}{5} = 35$

Value of x is 35.

Now,
m∠A ( Measure of ∠A ) =
3x + 13
3*35 + 13 = 105 + 13 = 118°

m∠A = 118°

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