Well, we know that GJI and FJH are congruent angles (have the same angle measure) this will help us to figure it out.
x + 60 = 5x is our equation.
Find the number that fits. We know that the number must be a multiple of 5, since the last part of the equation is 5x.
5? 5 + 60 = 65 5 x 5 = 25 65 does not equal 25..... at all.
10? 10 + 60 = 70 5 x 10 = 50 70 does not equal 50, although we're closer.
15? 15 + 60 = 75 5 x 15 = 75 75 = 75 There's the answer! x = 15
Therefore, each angle measures 75 degrees!
