How do you find x in this polygon?

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asked Aug 24, 2017 228k views

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How do you find x in this polygon?

Mathematics
high-school

Igor Pavelek asked

by Igor Pavelek

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1 Answer

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(5 - 2) x 180 = 540 = sum of interior angles in pentagon
180 - 42 = 138°
180 - 80 = 100°
110 + 100 + 138 + 2x + x = 540
348 + 3x = 540
- 348
3x = 192
÷ 3
x = 64°

VenVig answered Aug 28, 2017

by VenVig

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