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13. What is the measure of each
exterior angle?

13. What is the measure of each exterior angle?-example-1

1 Answer

2 votes

Answer:

56° , 82° , 62° , 80° , 80°

Explanation:

Firstly find the measure of x

the sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

here n = 5 , then

sum = 180° × (5 - 2) = 180° × 3 = 540°

sum the interior angles and equate to 540°

x + 118° + 100° + 100° + 124° = 540°

x + 442° = 540° ( subtract 442° from 540° )

x = 98°

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the exterior angle + interior angle = 180° , then

exterior angle = 180° - interior angle

∠ 1 = 180° - 124° = 56°

∠ 2 = 180° - 98° = 82°

∠ 3 = 180° - 118° = 62°

∠ 4 = 180° - 100° = 80°

∠ 5 = 180° - 100° = 80°

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