A degree is a unit of measure for angles.

To estimate is to find a value that is close enough to the right answer, usually with some thought or calculation involved.

Describe static angles using the standard unit of degrees when compared to a right angle

Maths

In this unit pupils will compare the size of angles where there is a clear visual difference and use the terms acute, obtuse and reflex when describing the size of angles or amount of rotation with relation to right angles using a unit called degrees. In the future unit pupils will use knowledge of shape properties to draw, sketch and identify shapes.

In the prior unit pupils completed and composed symmetrical shapes from two congruent shapes and investigate lines of symmetry in 2D shapes. In this unit pupils will compare the size of angles where there is a clear visual difference and use the terms acute, obtuse and reflex when describing the size of angles or amount of rotation with relation to right angles using a unit called degrees.

Angles: compare, name, estimate and measure angles

Which of the angles shown is a right angle?

Match the descriptions to the correct number of degrees of turn.			

Which of these is the best estimate for the angle shown?

Look at the hands on this clock face and the arrow. How does the angle created by the hands compare to a right angle?

Look at the hands on this clock face and the arrow. The angle formed is __________.

Which of the angles shown is an acute angle?

The triangle has two acute angles and one obtuse angle. 

The triangle has two acute angles and one right angle.

The triangle has two obtuse angles and one acute angle. 

The triangle has two obtuse angles and one right angle. 

This is a triangle. Look carefully at the vertices and the angles inside the shape. Which statement is correct?

A quadrilateral with two pairs of parallel sides.

A quadrilateral with four equal sides and four right angles.

A quadrilateral with exactly one pair of parallel sides.

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