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Name Triangles and Angles Correctly

In this worksheet, students will name the different types of angles and triangles.

'Name Triangles and Angles Correctly' worksheet

Key stage:  KS 2

Year:  Year 4 Maths worksheets

Curriculum topic:   Geometry: Properties of Shapes

Curriculum subtopic:   Compare Geometric Shapes

Popular topics:   Geometry worksheets

Difficulty level:  

Worksheet Overview

Here are a few important facts we need to know for our work with triangles!

 

Angles

right angle is 90º

An acute angle is less than 90º

 

Acute

 

An obtuse angle is between 90º and 180º

 

Obtuse

 

straight line angle is 180º

 

reflex angle is between 180º and 360º

 

girl thinking

 

Triangles

A right-angled triangle has one 90º angle.

 

Right-Angled Triangle

 

An isosceles triangle has two equal angles.

 

Isosceles Triangle

 

 

An equilateral triangle has three equal angles, each of size 60º.

 

Equilateral Triangle

 

 

A scalene triangle has three different angles.

 

Scalene Triangle

 

That's a lot to remember, but it's all very important stuff to know and will really help you in your geometry work!

 

If you want to see this introduction again, just click on the red help button that will appear on the screen.

 

Let's get practising!

 

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