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Geometry: How Many Right Angles?

In this worksheet, students state which of the quadrilaterals and triangles shown have right angles (angles of 90 degrees).

'Geometry: How Many Right Angles?' worksheet

Key stage: KS 2

Curriculum topic: Maths and Numerical Reasoning

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

Difficulty level:

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Worksheet Overview

This worksheet is about right angles found in simple shapes.

Example

Which of these shapes are quadrilaterals with no right angles.

Parallelogram

a

Triangle

b

Rectangle

c

Rhombus

d

Trapezoid

e

Triangle

f

Triangle

g

Right-angled triangle

h

Answer

Remember that the corner of a rectangular piece of paper is a right angle.

Use this to help.

Quadrilaterals have four sides.

Triangles have three sides.

The answer is a, d and e.

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