This document discusses different types of angles including reflex angles which are more than 180 degrees but less than 360 degrees. It also mentions complementary angles which add up to 90 degrees, supplementary angles which add up to 180 degrees, adjacent angles which share a common side and vertex, linear pairs which are two adjacent angles whose non-shared sides form a line, and vertically opposite angles which are equal because they are formed by two intersecting lines.

2. CHAPTER 5
LINES AND ANGLES

7. RARELY USED ANGLES
REFLEX ANGLE
More than 180o but less than
360o .

8. RELATED ANGLES
 COMPLEMENTARY ANGLES
 SUPPLEMENTARY ANGLES
 ADJACENT ANGLES
 LINEAR PAIR
 VERTICALLY OPPOSITE ANGLES