Area of Triangles

What this topic covers

• Explain why a triangle is half of a rectangle (or parallelogram) with the same base and height.
• Use area = ½ × base × height.
• Use the perpendicular height, including for triangles where it falls outside.

Core concept summaries

Practice formats pupils may meet

NeurofiED uses varied practice to help pupils apply the idea actively, check understanding and build confidence over time.