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Maths

Angles in Regular Polygons & Vertically Opposite

Find unknown angles in regular polygons, and recognise vertically opposite angles and find missing values.

MathsAge 11+25 minutes

What this topic covers

  • Find the angle sum of a polygon as (n − 2) × 180° and each interior angle of a regular polygon.
  • Find the exterior angle of a regular polygon as 360° ÷ n.
  • Use vertically opposite angles (equal) where lines cross.

Core concept summaries

Key ConceptsThe Angle Sum of Any PolygonExterior AnglesVertically Opposite Angles; the Trap

Practice formats pupils may meet

NeurofiED uses varied practice to help pupils apply the idea actively, check understanding and build confidence over time.

clozematchingquiz