Q123
In quadrilateral ABCD, the bisectors of ∠A and ∠B meet at O and ∠AOB = 64°. ∠C + ∠D is equal to:
A.
116°
B.
128°
AnswerC.
148°
D.
136°
Answer: Option B
Solution
Answer: Option B
Solution:
x + y = 180° - 64°
x + y = 116°
2(x + y) = 232°
∠C + ∠D = 360° - 232° = 128°