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Construction Proofs : Pentagon Proportionality and Hexagons

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Construction proofs are provided.

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1. The sum of the internal angles is:

(N-2) * 180 = (5-2) *180 = 540

So the sum of angle C, D, E is 540 -150-60 = 330

so for angle C, D, E, we can have 4x + 3x + 4x = 11x = 330 , so x = ...

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