1.4 Parallel lines
Two straight lines that do not intersect, no matter how far they are extended, are said to be parallel. Arrows are used to indicate parallel lines.
Look at the line l, which cuts two parallel lines m and n.
The next two activities look at the angles formed by this line.
Activity 4: Corresponding angles
Clickfor Activity 4.
Activity 5: Alternate angles
Click here for Activity 5.