Finding a formula for interior angles in any polygon

Last updated: 15/11/2023
Contributor: Teachit Author
Finding a formula for interior angles in any polygon
Main Subject
Key stage
Category
Geometry and measures: 2D shapes
Inside
Includes answers
Resource type
Worksheet

This student-led KS3-4 maths worksheet enables students to discover how to find the sum of the interior angles in a polygon. The double-sided worksheet has three sections:

Step 1: Divide 8 shapes into triangles

Step 2: Calculate the sum of the internal angles

Extension: Test the formula on a further 4 shapes

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