Explore the triangle area formula, its derivation, and practical examples to master this essential geometric concept effortlessly.

Revise how to calculate the area of a triangle. Learn how to calculate the triangle's area by first finding the area of a rectangle in this BBC Bitesize maths guide.

Learn how to calculate the areas of rectangle, triangle, and circle in Excel for a single cell or range of cells usin this formula.

A KS3 Bitesize 11-14 Maths guide showing you how to prove the area of a triangle is half base × height.