GCSE Maths Practice: perimeter-and-area

Question 2 of 10

This question focuses on calculating the area of a triangle using its base and height.

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\( \begin{array}{l}\text{Find the area of a triangle with base } 6\,\text{cm} \text{ and height } 4\,\text{cm}.\end{array} \)

Choose one option:

Always identify the base and perpendicular height. Divide by 2 after multiplying.

To find the area of a triangle, multiply the base by the perpendicular height and divide by 2. This formula works for all triangles where the height can be measured perpendicular to the base. For instance, a triangle with base 6 cm and height 4 cm has an area of 12 cm². Understanding how to identify the perpendicular height is key. Some triangles may require extending lines or using Pythagoras to find the height. Practicing multiple examples reinforces this concept and reduces calculation mistakes in exam conditions.