Question

To construct 112.5 degree angle with compass

Answer 1

draw 90 degree and 150 degree and 120 degree with compass
now draw the angle bisector  of 150 and 120
you will get 135 degree angle
now construct angle bisector of 90 and 135
you will get 112.5 degree angle.. 

Answer 2

Angle of 112.5° is obtained.

Step-by-step explanation:

Steps of Construction:

1. Draw a straight line AB then from point A draw an arc,and then point b draw another arc such that there angle of construct 90° on it.

2. Now construct angle bisector of 90° and As there are two 90° angles,bisect the another 90° angle to make 45°.

3. Bisect 45° to make 22.5°.

Hence,angle of 112.5° is obtained.