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andrewthecookie andrewthecookie
  • 14-02-2017
  • Mathematics
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40love 40love
  • 14-02-2017

the middle angles of a rhombus are 90 degrees which means the other two angles of the triangle must total 90 degrees.
(8x +7) + (3x + 6) = 90
11x + 13 = 90
11x = 77
x = 7

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