ashlynham ashlynham
  • 20-09-2017
  • Mathematics
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How do I solve for x?

How do I solve for x class=

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apologiabiology
apologiabiology apologiabiology
  • 20-09-2017
the external angle is equal to the sum of the other 2 interior angles

basically 109=6x+21+2x
109=8x+21
minus 21 both sides
88=8x
11=x

x=11 degreees
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