Angles

Mathematics J.S.S 2 Third Term

Theme: Mensuration and Geometry

Sub Theme: Shapes

WEEK 5

Angles

Performance Objectives

Students should be able to;

1. Distinguish between angle of elevation and depression
2. Use angle of elevations and depression in calculating angles and height using scale drawing
3. Identify angles of elevation and depression

Angles of Elevation and Depression

Content

Any surface which is parallel to the surface of the earth is said to be horizontal. For example, the surface of liquid in a container is always horizontal, even if the container is held at an angle.

The floor of your classroom is horizontal. Any line drawn on horizontal surface is will also be horizontal. Any line or surface which is perpendicular to a…