3 years ago

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

1 answer:

6 0

Answer: 135°

Step-by-step 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

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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?​