Answer:
28
Step-by-step explanation:
The sum of
interior angles
in a triangle is equal to 180°.
This is an
isosceles triangle
, so both ∠B and ∠G are = x + 10.
We can write the following
equation
based on the above-mentioned information:
3x + x + 10 + x + 10 = 180
Add
like terms
.
5x + 20 = 180
Subtract
20 from both sides.
5x = 160
Divide
both sides by 5.
x = 32