Memory Trick for Trapezium

Part of Area of Parallelograms & Trapeziums · Section 3 of 8

Deep DiveUnit: Geometry & MeasuresGCSE

This deep dive covers Memory Trick for Trapezium within Area of Parallelograms & Trapeziums for GCSE Mathematics. Revise Area of Parallelograms & Trapeziums in Geometry & Measures for GCSE Mathematics with 11 exam-style questions and 4 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 3 of 8 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.

Memory Trick for Trapezium

1 Add the parallel sides (a + b)

2 Multiply by the height

3 Halve it (divide by 2)

Why? A trapezium is like the average of two rectangles - one using side 'a' and one using side 'b'.

Practice questions for Area of Parallelograms & Trapeziums

A parallelogram has base b and perpendicular height h. Which formula gives its area?

A. (1/2) × b × h
B. b × h
C. 2(b + h)
D. (1/2)(b + h) × s

1 markfoundation

Explain why the area formula for a parallelogram is the same as the area formula for a rectangle.

2 markshigher

Quick recall flashcards

Trapezium Area

Area = ½ × (sum of parallel sides) × height = ½(a + b)h

Area of Trapezium

½ × (a + b) × h where a,b are parallel sides

The Key Formulas

Worked Example 1: Parallelogram

11 questions on Area of Parallelograms & Trapeziums — practise free

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