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Geometry · Chapter 6 · Lesson 6.5 · Printable PDF

Proving Properties of a Parallelogram Worksheet with Answer Key

6 problems on proving properties of a parallelogram: opposite sides and angles, diagonals, perimeters, the fourth corner, and proofs. 2 pages, with a worked answer key.

6 problems2 pagesanswer key
Printable Proving properties of a parallelogram worksheet with answer key - Geometry (Page 1 PDF preview)
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Try one first: a free Chapter 1 worksheet (PDF, no sign-in).

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What's on the worksheet

  1. Find the other two vertices from the diagonal crossing and check opposite sides.
  2. Check Emma's SAS argument for a parallelogram.
  3. Use the fence and path lengths in a park to find distances.
  4. Find all three possible fourth corners of a parallelogram.
  5. Prove opposite angles are congruent with the alternate interior angles theorem.
  6. Prove two segments share a midpoint using two parallelograms.

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The free lesson teaches it with worked examples and practice problems.

Proving properties of a parallelogram: the lesson ›

More Chapter 6 worksheets: Quadrilaterals and polygons