What is an angle of 90 degrees called?

Describe an acute angle.

In each hour on a clock, how much angle is covered by the hour hand?

For which angle is cos =-1/2? (A) 150 (B) 135 (C) 120 (D) -30 (E) -60

It?s 3 pm. How many degrees are in the angle between the hour and minute hand? ?

If m angle. 3 = 42 , what is m angle. 2? A. 42 B. 48 C. 90 D. 138

What is the reflex angle of 90 degrees?

What is the name of an angle of 100 degrees?

What's the difference here between arc AD and angle AED?

What is the measure of angle LMN?