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Knowing Different Kinds of Triangle

In this worksheet, students identify different types of triangles classified by their sides, by their angles or by a combination of both sides and angles.

'Knowing Different Kinds of Triangle' worksheet

Key stage:  KS 2

Year:  Year 5 11+ worksheets

Curriculum topic:   Maths and Numerical Reasoning

Curriculum subtopic:   2D Shapes: Triangles, Quadrilaterals and Polygons

Difficulty level:  

Worksheet Overview

A scalene triangle has no sides equal and no angles equal.

An isosceles triangle has two sides equal and also two angles equal.

An equilateral triangle has all three sides and all three angles equal to 60°.


A right-angled triangle is one in which one angle is 90°.




Scalene Isosceles Equilateral Right angle


Note that equal sides are marked by small dashes.

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