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12. Find the measure of the exterior angle.
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12. Find the measure of the exterior angle.

12. Find the measure of the exterior angle.-example-1
User David EGP
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1 Answer

16 votes
16 votes

Answer:

68

Explanation:

The sum of two interior angles in a triangle is equal to an exterior angle that is supplementary to the third interior angle

3x - 2 + 4x + 4 = 6x + 8 add like terms

7x - 2 = 6x + 8

7x - 6x = 8 + 2

x = 10

The measure of exterior angle

6x + 8 = 6*10 + 8

The measure of exterior angle is 68 degrees

User Tushar Joshi
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2.8k points
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