Kinds of Angles

2. Angle
 It is a geometric figure where two rays meet
at a common point.
 VERTEX- the common point where two rays
meet.

3. KINDS OF ANGLE

4. ACUTE ANGLE
 Ann angle which measures greater than 0° but less
than 90°.
40°

5. RIGHT ANGLE
 An angle which measures exactly 90°.
90°

6. OBTUSE ANGLE
 An angle which measures more than 90° but less
than 180°.
150°

7. STRAIGHT ANGLE
 An angle which measures exactly 180°.

8. REFLEX ANGLE
 An angle which measures more than 180° but less
than 360°
250°

9. ZERO ANGLE
 An angle which measures 0°.

10. PAIRS OF ANGLES

11. ADJACENT ANGLES
 Are two angles that have a common side and
common vertex.

12.  COMPLEMENTARY ANGLES- are adjacent angles
whose sum of the angles is 90°
50°
40°

13.  SUPPLEMENTARY ANGLES- are adjacent angles
whose sum of the angles is 180°
50°130°

14. VERTICAL ANGLES
 Are two angles formed by two intersecting lines. They
have a common vertex but no common side.
 Vertical angles are equal.
130°
130°
50°
50°
A
B
C
D