Triangles and Quadrilaterals

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Across
  1. 1. / a quadrilateral with 2 sets of parallel sides and four congruent sides
  2. 3. / triangle with one angle that measures ninety degrees
  3. 5. / all sides and all angles are not congruent
  4. 10. / a quadrilateral with exactly one pair of parallel sides
  5. 11. / triangle with one angle greater than ninety degrees but less than 180
  6. 12. / triangle with no congruent sides
Down
  1. 1. / all sides and all angles congruent
  2. 2. / a quadrilateral with both pairs of opposite sides parallel
  3. 4. / a quadrilateral with 2 sets of parallel sides, four right angles and four congruent sides
  4. 5. / triangle with at least two congruent sides
  5. 6. / triangle with three congruent sides
  6. 7. / a polygon with 3 sides
  7. 8. / triangle with three angles less than ninety degrees
  8. 9. / a quadrilateral with 2 sets of parallel sides and four right angles