We need to remember the relationships between the angles that a transversal makes when it crosses a pair of parallel lines:
We also need to know their names, so we need to know what are;
- vertically opposite angles;
- corresponding angles;
- alternate angles; and
- interior angles.
Using this information, let’s complete exercise 6 on page 7 of the core textbook (and if we have time, questions 4 to 9 of exercise 3 on page 141 of the extended textbook):
The answers are below: