joelin123pbps09 joelin123pbps09
  • 11-07-2018
  • Mathematics
contestada

calculate the size of angle y

calculate the size of angle y class=

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DeanR
DeanR DeanR
  • 11-07-2018

Angles in a triangle add to 180 degrees, a quadrilateral 360 degrees, a pentagon 540 degrees and a hexagon 720 degrees.

y + 110 + 75 + 170 + 90 + 130 = 720

y = 720 - 575 = 145 degrees
Answer Link
Аноним Аноним
  • 11-07-2018
This is a hexagon and the sum of its internal angles = 720 degrees.

Therefore m < y =  720 - (110 + 75 + 170 + 90 + 130)  

=   145 degrees  (answer).
Answer Link

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