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What's on the worksheet
- Find x and the angles formed where scissor blades cross.
- Find x and y from three angles at a crossing of two lines.
- Prove an angle is congruent to a supplement of a congruent angle.
- Prove two angles are congruent starting from a pair of equal angles at a crossing.
- Prove two angles are complementary using a perpendicular ray at a crossing.
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The free lesson teaches it with worked examples and practice problems.
Proving angle pair theorems: 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