Question

four angles of a pentagon are 100°,175°,85°and75°.Find the fifth angle.
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Answer 1

Answer:

Fifth angle = 105°

Step-by-step explanation:

Total Sum of angles of a pentagon = 540°

Let the fifth angle be x.

(100+175+85+75+x)°=540°

x + 435° = 540°

x = 105°

Hope it helps U.

Answer 2

Explanation:-

Let the fifth angle be x .

= (100+175+85+75+x) degrees = 540 degrees.

= (435+x) degrees = 540 degrees.

= x = 540- 435

= x = 105.

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