2 years ago

Based on the picture below: what is the measure of x

Mathematics

2 answers:

Mashutka [201]2 years ago

7 0

Answer:

x = 140

Step-by-step 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

Helga [31]2 years ago

4 0

Answer:

140

Step-by-step explanation:

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