Question

please explain in copy​

Answer 1

Answer:

AB and DC are straight lines.

Answer 2

Given:

m<AOD=45°

To Find:

1) m<COB=?

2) m<AOC=?

3) m<BOD=?

Solution:

1) m<AOD=45°.............. (Given)

<AOD=<COB=45°....... Opposite angles

Therefore, <COB=45°

2) <AOD+<AOC=180°...... Angles in linear pair.

45°+<AOC=180°

<AOC=180-45

<AOC=135°......... (1)

3) <AOC=<BOD..... Opposite angles

Therefore, <BOD=135° ...... (From 1)