Ways to prove parallelograms/quadrilaterals

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Author:
Anonymous
ID:
16695
Filename:
Ways to prove parallelograms/quadrilaterals
Updated:
2010-04-28 19:51:25
Tags:
Geometry parallelograms
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geometry
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  1. Both pair of opposite sides parallel
  2. Opposite angles are congruent
  3. Consecutive angles (same side interior angles) are supplementary
  4. If one angles is a right angle, than all four are right angles
  5. The diagonals bisect each other
  6. Opposite sides are congruent
  7. (quads parallel)
    both pair opposite sides are parallel then the quad is a parallelogram (DEF OF PARALLELOGRAM)
  8. (quads parallel)
    both pair opposite sides congruent then the quad is a parallelogram
  9. (quads parallel)
    both pair opposite angles congruent then a quad is a parallelogram
  10. (quads parallel)
    diagonal bisect each other than the quad is a parallelogram
  11. ***(quads parallel)
    one pair of opposite sides are congruent and parallel

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