jimmyb975
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  • 25-08-2018
  • Mathematics
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gmany
gmany gmany
  • 26-08-2018

z = x (alternate angles)

w = y (alternate angles)

w + 75° =180° |-75°

w = 105° → y = 105°

z + w + 30° = 180°

(the sum of measures of the angles in a triangle is equal 180°)

z + 105° + 30° = 180°

z + 135° = 180° |-135°

z = 45° → x = 45°

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