Prove that triangle AOC is congruent to triangle BOD
Here is the solution to your query-
ANGLE ACO= ANGLE BDO (65) [ALTERNATE ANGLES]
ANGLE AOC =ANGLE BOD (35) [VERTICALLY OPPOSITE ANGLES]
Thus TRIANGLE AOC is congruent to TRIANGLE BOD.
Proved by ASA rule.
Hope this answer has satisfied your doubt.
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