Maths Support Week 5 Summer 2

Next week the children will consolidate and revise all Year 5 learning associated with geometry which include work on angles, translations and shape.

What are angles?

Angles are a measure of turn. Follow these simple rules for angles:

Angles are measured in degrees. The sign for degrees is °.

One whole turn is 360°a is an example of a whole turn.

One quarter turn is 90° or a right angle. b is an example of a quarter turn.

One half turn is 180° or a straight line. c is an example of a half turn.

Diagram showing the angles 360%, 90% and 180%

Types of angles

a) An angle less than 90° is acute.

b) An angle between 90° and 180° is obtuse.

c) An angle greater than 180° is reflex.

Diagram showing different angles

Adding up angles

  • The three angles inside a triangle always add up to 180°. This is shown by aand b in the example.
  • All angles at a point always add up to 360°. This is shown by c in the example.

Diagram showing angles and triangles

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