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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 covering Oxford AQA IGCSE Maths Angles in Polygons for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Since content from any part of the specification can appear on either paper, keep number and algebra fluency sharp throughout the course rather than leaving it until near the exam.

Lessons

Compound Interest and DepreciationIndicesPrime Factors, HCF and LCMInequalitiesForming and Solving EquationsSequences (Nth Term)Expanding and FactorisingPythagorasAngles in PolygonsSurface AreaVolume of a PrismCylindersBearingsAverages from Frequency TablesProbability