Mathematics J.S.S 2 Third Term

Theme: Mensuration and Geometry

Sub Theme: Shapes



Performance Objectives

Students should be able to;

  1. Find the sum of the angles of a triangle
  2. Find the sum of angles in a quadrilateral
  3. Find the sum of the angles in a polygon

Definition of Polygons


Polygon is a closed plane figure bounded by straight lines (edges). The number of sides of a polygon determines its names. The table below describes the names of polygons according to the number of their sides:


No. of sides and angles


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