Lines and meet at giving adjacent angles and

MATHEMATICS · Subjective · CBSE · Mathematics · Lines and Angles · Lines and Angles

Problem

Lines

AB

and

CD

meet at

O

giving adjacent angles

\angle AOB=125^{\circ}

and

\angle BOC=55^{\circ}

. Determine whether points

A

O

and

C

are collinear. Give a reason for your answer.