Co-interior angles are on the same side of the transversal line and in between the two other lines.

Co-interior angles

Maths

This unit gives pupils the opportunity to explore polygons and begin to generalise their understanding of interior/exterior angles in regular polygons. In the future unit, pupils will use the geometrical properties of a rhombus to perform various constructions

In this unit, pupils learnt how to calculate with angles at a point and angles on a straight line. In this unit, pupils extend their knowledge about angles in lines

Geometrical properties: polygons

Co-interior angles are on the {{ }} side of the transversal line and in between the two other lines.

Which of these diagrams show co-interior angles?

If the co-interior angles are in parallel lines then the angles are {{ }}.

The angle marked $$n$$° is {{ }}° as $$n$$° and 118° are supplementary co-interior angles.

Use this diagram to match pairs of supplementary co-interior angles.

The value of the angle marked $$a$$ is {{ }}°.

The value of the angle marked $$x$$ is {{ }}°.

Which pair of line segments are equal in length in this diagram?

Alternate angles are a pair of angles both between or both outside two line segments that are on opposite sides of the {{ }} that cuts them.

Which of the following show a pair of equal corresponding angles?

Starter Quiz