Types of angles with their Names and Basic definitions:

Angle Name Angle Range Description

1. Zero Angle Exactly 0° No opening between the arms.

2. Acute Angle 0° < Angle < 90° Smaller than a right angle.

3. Right Angle Exactly 90° Forms a perfect "L" shape.

4. Obtuse Angle 90° < Angle < 180° Wider than a right angle.

5. Straight Angle Exactly 180° A straight line.

6. Reflex Angle 180° < Angle < 360° Larger than a straight angle.

7. Full Angle Exactly 360° A full circle.

8. Complementary Angles Two angles whose sum is 90° Example: 30° + 60°.

9. Supplementary Angles Two angles whose sum is 180° Example: 110° + 70°.

10. Adjacent Angles Angles that share a side and vertex, and are next to each other.