Question

construct angles of the given measure using compass .a-45 degarry​

Answer 1

make a line AB and bisect it. you will get four angles bisect any one of it . angle formed will be of 45 degree

Answer 2

Firstly draw an arcs on a straight line .

Then taking the point as centre of compass where the arc intersects the st. line draw another arc.

Then draw another arc intersecting the previous arc by drawing the arc from the other side also where line intersects the arc

After that join the point where the two newly drawn arcs intersect with the straight line.

This'll give a right angle.

The then the final step is to bisect the right angle to get the 40° angle