Question

What is the angle between the adjacent axes?

Answer 1

Normally some angles also have special names as well as an angle of 180° is called a straight angle, even an angle of 90° is called a right angle.

In general, angles between 90° as well as 180° are called obtuse and angles between 0° and 90° are called acute.

If two angles sum to 180°, then they are called supplementary.