Types of Angles – math games for 5th grade
- A right angle is an angle of 90 degrees such as the corner of a square or a circle divided into quarters.
- An acute angle is a sharp angle that is smaller than a right angle at less than 90 degrees.
- An obtuse angle is more than 90 degrees but smaller than 180 degrees.
- Finally, a straight or flat angle is an angle that is 180 degrees when it stays flat.