Angle Properties of a Polygon

By the end of this unit, students will:

1. recap angle facts studied in previous years;
2. review different types of polygons with reference to shapes, names and side lengths;
3. calculate the interior and exterior angles of a polygon;
4. determine the sum of interior angles of a polygon;
5. and find the connection between the number of sides and the number of triangles in a polygon.

Curriculum Alignment: Key Stage 3: Geometry and Measures

• derive and use the sum of angles in a triangle and use it to deduce the angle sum in any polygon, and to derive properties of regular polygons