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Right-angled triangles and the hypotenuse

Right-angled triangles and the hypotenuse

Labelled right-angled triangle with sides a and b as shorter sides and side c as the hypotenuse opposite the right angle

Pythagoras' theorem only works in a right-angled triangle. The hypotenuse is opposite the right angle. It is always the longest side.

Pythagoras Lesson

  1. IGCSE
  2. /Maths
  3. /Pythagoras

Step-by-step lessons covering Edexcel IGCSE Maths Pythagoras for IGCSE Maths. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. 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.

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