find the value of (x+y)
MATHEMATICS
WAEC 2021
find the value of (x+y)
- A. 215°
- B. 70°
- C. 135°
- D. 145°
Correct Answer: A. 215°
Explanation
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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