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Angles in Polygons
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Interior angles and the triangle method

Interior angles and the triangle method

Hexagon split into four triangles from one vertex, showing how a polygon can be divided into triangles to find the interior angle sum A polygon is a flat 2D shape with straight sides, and a vertex is a corner. An interior angle is the angle inside the polygon at a vertex.

Angles in Polygons Lesson

  1. IGCSE
  2. /Maths
  3. /Angles in Polygons

Step-by-step lessons on Edexcel IGCSE Maths Angles in Polygons. Each one builds up to exam-style questions. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.

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