Geometry & MeasuresKey Facts

The Key Formulas

Part of Area of Parallelograms & Trapeziums · GCSE GCSE Mathematics revision

This key facts covers The Key Formulas 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 2 of 8 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 2 of 8

Practice

11 questions

Recall

4 flashcards

The Key Formulas

Shape	Formula	Key Point
Parallelogram	Area = base × perpendicular height	Same as rectangle! (A = b × h)
Trapezium	Area = ½ × (a + b) × h	a and b are the parallel sides

Remember: Height is ALWAYS perpendicular (90°) - never the slanted side!

Keep building this topic

Read this section alongside the surrounding pages in Area of Parallelograms & Trapeziums. That gives you the full topic sequence instead of a single isolated revision point.

Shapes with Parallel Sides Memory Trick for Trapezium Worked Example 1: Parallelogram Worked Example 2: Trapezium

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

Area of Trapezium

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

Trapezium Area

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

11 questions on Area of Parallelograms & Trapeziums — practise free

Instant marking, adaptive difficulty, and 4 spaced repetition flashcards. Free until your GCSEs.

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Shapes with Parallel Sides

Memory Trick for Trapezium