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11-07-2018
Mathematics

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calculate the size of angle y

calculate the size of angle y class=

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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

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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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