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largest angle = 6 times the smallest. middle angle = 5 * the smallest. sum of the angles of a triangle is 180. let x = the size of the smallest angle. the size of the middle angle is 5x. the size of the largest angle is 6x. x + 5x + 6x = 180 combine like terms to get 12x = 180 solve for x to get x 180/12 = 15 degrees. 5x = 75 degrees. 6x = 90 degrees. largest angle is 90 degrees. middle angle is 75 degrees. smallest angle is 15 degrees.
Key stage: KS 2
Year: Year 3 Maths worksheets
Curriculum topic: Geometry: Properties of Shapes
Curriculum subtopic: Recognise Angles
Popular topics: Angles worksheets, Geometry worksheets
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