Question

The four angles of pentagon are equal and the fifth angle measure 140° find the measure of four equal angles​

Answer 1

Answer:

Step-by-step explanation:

Number of sides in a hexagon=n=6

Sum of interior angles=(n−2)180

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=(6−2)180

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=720

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Let the remaining angle be x

⇒x+100

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+120

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+130

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+140

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=720

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⇒x+600

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=720

∘

⇒x=720

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−600

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=120

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∴ Measure of sixth angle is 120

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