Angle Investigations

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Geometry: Properties of Shape

Year 3: Recognise angles as a property of shape. Recognise right angles

Year 4: Identify acute and obtuse angles. Compare shapes based on their angles

Year 5: Reason about polygons based on their angles

Morning starter:Quick draw a 3 x 3 grid on your whiteboard. Answer each question by drawing the correct image in the grid square.

Explore… Think about other 2d shapes that you know. Describe their angles. Can you spot any patterns?

An angle the same as

(equivalent to) 90 degrees

A shape that only has acute

anglesA shape with 8 obtuse angles

A quadrilateral with one acute

angle

An angle less than 90 degrees

A quadrilateral with two acute and two obtuse

angles

An obtuse angle

A quadrilateral shape with two

right angles An angle of

180 degrees