Area of Triangle Formula Area of a triangle is half the product of its base and height. Therefore, to calculate the area of a triangle, one should have its base and height measurements.

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

WHAT YOU NEED: two pieces of paper/card, pencil, scissors, ruler. Image caption, STEP 1: Place one piece of card on top of the other and use the ruler to draw a line from the bottom left corner of the ...