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From base and height to any triangle

From base and height to any triangle

Triangle with base a, sloping side b, included angle theta at the base, and perpendicular height h dropped to the base

You already know the triangle area formula A=12×base×heightA=\frac{1}{2} \times \text{base} \times \text{height}A=21​×base×height. That works when the height is the perpendicular distance to the base, even if the height is not already drawn.

Finding the Area of Any Triangle Lesson

  1. IGCSE
  2. /Maths
  3. /Finding the Area of Any Triangle

Step-by-step lessons covering Edexcel IGCSE Maths Finding the Area of Any Triangle 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