Parallel lines are straight lines that are always the same distance apart. They never get closer together or further apart.

Identifying parallel lines

Maths

In this unit pupils will investigate ways to compose and decompose polygons. They will investigate quadrilaterals with and without parallel and perpendicular sides. In the future unit pupil will learn perimeter as the distance around the edge of a 2D shape. They will learn perimeter is measured in units of length found by counting units and by calculating by adding the side lengths of a 2D shape.

In the prior unit pupils rotated two lines around a fixed point to make different sized angles. They identified vertices. In this unit pupils will investigate ways to compose and decompose polygons. They will investigate quadrilaterals with and without parallel and perpendicular sides.

Parallel and perpendicular sides in polygons (and perimeter)

True or false? These lines are all parallel to one another.

… extend the sides to have longer lines.

To check if sides in a shape are parallel, you can …

How many other sides are parallel to the side marked with an A in this polygon?

True or false: If a shape has a pair of parallel sides it must also have a pair of perpendicular sides.

Order the shapes starting with the shape with the highest number of vertices.

Complete the sentence. This quadrilateral has {{ }} pair(s) of parallel sides.

Complete the sentence. This polygon has {{ }} pair(s) of perpendicular sides.

Complete the sentence. A pair of perpendicular sides meet to make a {{ }} angle.

Select the correct end to this sentence. A trapezium has exactly …

Name one of the two shapes that this pentagon has been decomposed into.

This lesson will soon be taken down.

Identifying parallel lines

Lesson outcome