Troublesome Triangles

Worksheets
Maths National Curriculum aligned
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  • Used in UK classrooms
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Triangles have 3 sides. The length of each side and the angles inside a triangle can be different, these properties are used to name triangles.

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KS2 geometry worksheet that helps Year 3 and Year 4 children sort triangles by their side lengths and angles into four named types.

A short rule introduces the four triangle types with their key properties: equilateral (all sides and angles equal), right-angled (one 90-degree angle), isosceles (two equal sides and two equal angles) and scalene (all sides and angles different). Children look at fourteen labelled triangles on the page and colour each one a different colour for its type. They then sort the letters into a four-column table. To finish, they draw an example of each of the four triangle types on a separate piece of paper.

Useful for KS2 SATs revision, classroom intervention or homework on shape properties. More shape work sits in our shape and measurement worksheets for KS2 ages 7 to 9. Printable PDF, A4, downloads instantly after purchase.