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4. x = a. 20° b. 240 C. 28° (5x) 120° d. 30°
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3 votes
4. x =
a. 20°
b. 240
C. 28°
(5x)
120°
d. 30°

4. x = a. 20° b. 240 C. 28° (5x) 120° d. 30°-example-1
User David Ryder
by
8.7k points

1 Answer

5 votes

An exterior angle equals the sun of the two opposite inside angles:

5x = 120 + x

Subtract 1 x from both sides:

4x = 120

Divide both sides by 4:

X = 30

The answer is D. 30

User Mobiuseng
by
8.7k points
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