# Alternate angles

## Lesson details

### Key learning points

1. In this lesson, we will learn how to identify alternate angles, and the equality of alternate angles for parallel lines.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

Share with pupils

## Worksheet

Share with pupils

## Starter quiz

Share with pupils

### 5 Questions

Q1.
The space BETWEEN two lines is called the...
Exterior region
Intersection
Transversal
Q2.
The space OUTSIDE two lines is called the...
Interior region
Intersection
Transversal
Q3.
If a third line crosses these two lines, as in the previous questions, this is called the...
Exterior region
Interior region
Intersection
Q4.
The point at which two (or more) lines cross is called the...
Exterior region
Interior region
Transversal
Q5.
Two lines cross and form an intersection. One of the marked angles is 75 degrees. The vertically opposite angle to 75 degrees would be...
105 degrees
180 degrees
360 degrees

## Exit quiz

Share with pupils

### 5 Questions

Q1.
Alternate angles are...
Always sum to 180 degrees
Always sum to 360 degrees
Different in size
Q2.
A pair of angles at different intersection points with a transversal are called alternate if they…
Are in the same 'region'
Lie on different sides of a transversal
Correct answer: Lie on different sides of a transversal AND in the same 'region'
None of the above
Q3.
Alternate angles only appear in the interior region.
True
Q4.
Alternate angles only appear in the exterior region.