Year 8 Mathematics / Properties of Geometrical Figures
Properties of Polygons
Calculate interior angle sums and individual angles of regular and irregular polygons using the formula (n − 2) × 180°, and use the exterior angle sum of 360°.
Syllabus area
Measurement and Space
Focus
Build Stage 4 geometric fluency — angle relationships, parallel lines, polygon properties and introductory congruence — as the foundation for Year 9 geometric representations and Year 10 geometry proofs.
You can jump straight to the Mastery Quiz whenever you are ready.
Nova Maths