Consider this partially completed proof: Given: Lines and intersect at
MATHEMATICS · Single correct · CBSE · Mathematics · Lines and Angles · Lines and Angles
Problem
Consider this partially completed proof:
Given: Lines AB and CD intersect at O.
Proof:
(a) ∠AOC=∠AOD
(b) ∠AOC+∠AOD=∠AOD+∠DOB
(c) ∠AOC+∠DOB=180∘
(d) ∠AOC=∠DOB