Lines and Angles

This topic discusses line-segment, ray, collinear and non-collinear points, arm, and vertex. It also explains acute, right, obtuse, straight, reflex, vertically opposite, adjacent, complementary, supplementary angles and linear pair of angles.

From this topic, we will learn about the relationship of degree with minute and second. We will discuss what angle they all represent. Furthermore, we will be able to convert one unit or measure of an angle to the other via these relationships.