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Find the sum of the measures of the interior angles of the figure.

what is the steps

Step-by-step explanation:

3

Step-by-step explanation:

Angle 10x + 2 and angle E are supplementary, so they add up to 180

so 10x + 2 + E = 180

solve for E to get

E = 178 - 10x

Angles G, E, and F add up to 180 because all three angles in a triangle always add up to 180

so G + E + F = 180

plug in 2x + 1 for G, 178 - 10x for E, and 25 for F

2x + 1 + 178 - 10x + 25 = 180

combine like terms and solve for x

204 - 8x = 180

-8x = -24

x = 3