1. ©2009 G Dear – Not to be sold/Free to use
Stage 4
Years 7 & 8
Angled between
Parallel Lines
Alternate Angles
(plus transversal)
Press Ctrl-A
©2009 G Dear – Not to be sold/Free to use

2. A line that crosses two, or more, parallel lines
Transversal
A line that crosses two, or more, parallel lines

3. Z Alternate Angles Alternate Angles are equal. They make a shape
To see
them.
Press

4. Alternate Angles Alternate Angles are equal. They make a Z shape 70o

5. Two Alternate Angles Exercisesao
140o
bo = 140
ao = 40o
Alternate Angles
in Parallel Lines. bo
40o