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Based on the picture below:

what is the measure of x

Based on the picture below: what is the measure of x-example-1

2 Answers

2 votes

Answer:

x = 140

Explanation:

The left vertex in the triangle and 120° form a straight angle and are supplementary, thus

angle + 120° = 180° ( subtract 120 from both sides )

angle = 60°

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

x is an exterior angle to the triangle, thus

x = 80 + 60 = 140

User ShahRokh
by
5.2k points
1 vote

Answer:

140

Explanation:

User BryanOfEarth
by
5.6k points