The four types of angles in geometry are acute, right, obtuse, and straight. An acute angle measure less than 90 degrees, a right angle measures exactly 90 degrees, an obtuse angle measures between 90 and 180 degrees, and a straight angle measures 180 degrees (one full rotation).

Acute Angle: It lies between 0° to 90. Obtuse Angle: It lies between 90° to 180° Right Angle: The angle which is exactly equal to 90° Straight Angle: The angle which is exactly equal to 180° Reflex Angle: The angle which is greater than 180 degrees and less than 360 degrees

Below are the names of angles based on their measure, as well as figures of what they look like: Acute angle - 0° to 90° Right angle - 90° Obtuse angle - 90° to 180° Straight angle - 180°

An acute angle measures less than 90° at the vertex. An obtuse angle is between 90° and 180°. A right angle precisely measures 90° at the vertex. An angle measuring exactly 180° is a straight angle. A reflex angle measures between 180°- 360°. `A complete angle measure equals 360°.`A complete angle measure equals 360°.