andreahall13p7rkxm
andreahall13p7rkxm andreahall13p7rkxm
  • 01-05-2018
  • Mathematics
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What is the Value of Y?

What is the Value of Y class=

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itmesarah
itmesarah itmesarah
  • 01-05-2018
It's a geometric rule that all angles in a triangle add to 180°.

Because we are told that one of the three angles in our triangle is 72°, and the other two are equal (they are both 
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