Parallel lines, transversals, and the angle pairs formed
- Describe an angle so a partner can find it — 3 tasks
- Three answers fix any one of the eight angles — 6 tasks
- Two comparisons make the name — 6 tasks
- Never meeting is not enough — 3 tasks
- Going Deeper — 7 tasks
- Practice — 28 tasks
- Summary — 2 tasks
- Cool-down — 3 tasks
Classroom activities
Things a class does rather than writes on. Each one is a finished PDF: print it, cut it up if it says so, and hand it round.
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The Five Names for a Pair of Angles — Cut & Glue Sort 30 minutes · 5 sheets
12 small figures to cut out and glue under the five names a transversal makes — corresponding, alternate interior and exterior, same-side interior and exterior — with a last bin for the pairs that are none of them; 2 pieces to every bin, so a finished sheet is marked in ten seconds.
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Naming the Pairs a Transversal Makes — Answer Maze 10–15 minutes · 4 sheets
One page and nothing to prepare: every box arcs two angles on a transversal and asks what that pair is called, and the name you pick sends you to the next box — the row of box numbers at the foot shows the teacher where a student went wrong.
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Transversals & Angle Pairs — Mystery Picture 25–35 minutes · 4 sheets
25 figures and not one number on the sheet: decide whether the two marked angles lie on opposite sides of the transversal or the same side, fill the opposite-side ones with slanted lines, and a picture comes out — a bite out of it is the square to do again.