Question

In figure, line segments AB and CD bisect each other at O. Then ΔAOC is congruent to which triangle?

State the three pairs of congruent parts you have used to arrive at the answer.

Answer 1

From the figure we have,

AO = OB

And, CO = OD

Also, $\angle$AOC = $\angle$BOD

Therefore, by SAS condition, $\Delta AOC\cong \Delta BOD$