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What's on the worksheet
- Say how many lines through P miss a line in each setting and which claim fails.
- Find which angle placements force parallel lines at a transversal.
- Find x and the angles on the right of a transversal and decide on which side the lines meet.
- Check four students' equations for the line through P parallel to a given line.
- Look at a triangle on a globe with right angles at the equator.
- Write a paragraph proof that A, B and C lie on one line, then compare with the disc model.
Teach it first
The free lesson teaches it with worked examples and practice problems.
The parallel postulate: the lesson ›More Chapter 2 worksheets: Angle pairs, parallel lines and first proofs
- 2.1Properties of equality and congruence
- 2.2Given, prove and the diagram
- 2.3Two-column and paragraph proofs
- 2.4Proving angle pair theorems
- 2.5The parallel postulate
- 2.6Proving lines parallel
- 2.7Proving alternate interior angles congruent
- 2.8Distance from a point to a line
- 2.9Auxiliary lines
- 2.10Proving the triangle angle sum