Question

line AB and CD intercet at point O such that A-O-B and C-O-D prove that angle AOC= angle BOC​

Answer 1

Step-by-step explanation:

angle BOC =angle AOD (vertically opposite angles)

similarly,angle AOC=angle BOD

therefore angle AOC +angle BOC=angle AOD+angle BOD (from above)

therefore A-O-B=C-O-D