Question

16. Two lines AB and CD intersect at O. IF AOC °+ COB°+ BOD °= 270º, then LAO
(a) 70°
(b) 80
(c) 90°
(d) 180°
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Answer 1

Answer:

(C)90°

Step-by-step explanation:

we know that complete angle is 360°

AOC°+COB°+BOD°+DOA°=360°

270°+DOA=360°

DOA°=360°-270°

=90°

Therefore DOA°=90°