GCSE Maths Revision Cards - Shapes

Question	Answer
The sum of exterior angles in any polygon	360°
The sum of interior angles in any polygon	(number of sides-2) x 180°
Area of a triangle	1/2 x base x vertical height
Area of a parallelogram	base x vertical height
Area of a trapezium	1/2(a + b) x vertical height
Area of a circle	π x radius²
Circumference of a circle	π x diameter or 2 x π x radius
Area of a sector of a circle	X ÷ 360 x area of full circle
Length of an arc of a circle	X ÷ 360 x circumference of full circle
Surface area of a sphere	4 x π x radius²
Surface area of a cylinder	(2 x π x radius x height) + (2 x π x radius²)
Volume of a prism	cross-sectional area x length
Volume of a cylinder	π x radius² x height

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	Created by Holly :D almost 9 years ago

	Copied by FIONA WRIGHT almost 9 years ago