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Four of the angle of a Pentagon are 70°,90°,100° and 145°. What is the side of a fifth angle?​
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Four of the angle of a Pentagon are 70°,90°,100° and 145°. What is the side of a fifth angle?​

User Jake Stewart
by
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1 Answer

6 votes

Answer: 135°

Explanation:

The sum of the angles in a pentagon is equal to 540°, and the sum of the first four angles is 405°.

70 + 90 + 100 + 145 = 405

540 - 405 = 135

User Ryanyuyu
by
7.1k points
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