find the value of (x+y)

  • A 215°
  • B 70°
  • C 135°
  • D 145°
waec 2021mathematics

The correct answer is A. 215°

sum of angle in a straight line = 180°

35 + m = 180

m = 180 - 35 = 145°

Corresponding angles are congruent i.e equal to each other

Angle X and M are congruent = 145

sum of angle in a straight line = 180°

110 + n = 180

m = 180 - 110 = 70°

Angle Y and N are congruent = 70°

\(\therefore\) ( x + y) = ( 145 + 70)°

(x + y) = 215°

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