Learn about the area of triangles with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

Change the size and shape of triangle ABC by dragging points A, B, and C. Click the Create Copy button to make a copy of the purple triangle. Translate the yellow copy using point C, and rotate it ...

To calculate the area of an equilateral triangle, use the formula below: Area of An Equilateral Triangle = (√3)/4 × side2 Area of An Isosceles Triangle Area of an isosceles triangle = ¼ b√4a2-b2 ...

Area of composite shapes To calculate the area of a composite shape you must divide the shape into rectangles, triangles or other shapes you can find the area of and then add the areas back together.