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Angles are measured in degrees °

A right angle is a quarter of a full turn. It measures 90°.

Make your own right angle by cutting a corner off a cereal box. See how many things around your house have right angles.

Right angles worksheet

See how many right angles these shapes have. Then have a go at the sorting right angles worksheet.

See how many right angles these shapes have. Then have a go at the sorting right angles worksheet.

Right angles are equal to quarter of a turn or 90°.

Angles can be more than or less than a right angle.

There are four types of angles. Right angles we already know about. Acute angles are less than a right angle. Obtuse angles are more than a right angle. However if they are more than a straight line they are reflex angles.

Still having problems working out what an angle is? Use this chart to help you work it out.

Identify the angles

Work out if these angles are right angles, acute, obtuse or reflex angles.

Work out if these angles are right angles, acute, obtuse or reflex angles.

Hitting the Target

Click on the**tennis ball** to learn how to recognise acute angles.

Click on the**cricket ball** to learn how to recognise obtuse angles

Click on the

Click on the

Use a piece a corner of a piece of paper to see if an angle is more or less than 90°. Fold it in half to see estimate 45° angles.

We measure angles using a protractor. Learn how to measure angles by watching the video below. Then have a go by printing off the worksheet.

Angles on a straight line will always add up to 180°.

Perpendicular lines always meet at 90°

The angles in a triangle always add up to 180°

Try it! Cut up a triangle and line them up on a straight line. Try different shaped triangles.

Now we know this we can work out any missing angles of the triangle. Watch below to find out how.

Angles

Control the Roboidz with your knowledge of angles in this exciting Mission 2110 game. Calculate angles that make a triangle and set dials to certain angles.

Control the Roboidz with your knowledge of angles in this exciting Mission 2110 game. Calculate angles that make a triangle and set dials to certain angles.

Follow Super Brainy Beans's board Angles on Pinterest.