Geometry -- Two Dimensional Shapes

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Across
  1. 3. A polygon, quadrilateral and parallelogram where all angles are 90°
  2. 4. An ____ triangle has ALL angles less than 90°
  3. 11. A polygon that has four straight sides
  4. 13. A polygon and quadrilateral. only has ONE pair of parallel sides
  5. 17. is more than 90°
  6. 19. A triangle with all three sides of equal length
  7. 20. A triangle with two (or more) equal sides.
Down
  1. 1. point where two or more line segments meet. A corner.
  2. 2. Always the same distance apart and never touching
  3. 5. A polygon, quadrilateral and parallelogram where all sides are congruent and all angles are 90°
  4. 6. An ______ angle is less than 90°
  5. 7. ____ is 90°
  6. 8. When two lines cross to create a right angle
  7. 9. A polygon where all opposite sides are parallel (squares, rectangles and rhombuses are all____)
  8. 10. The same shape and size (equal)
  9. 12. A polygon, quadrilateral and parallelogram where all opposite sides are parallel
  10. 14. A polygon with 3 sides and 3 angles
  11. 15. A closed figure with at least 3 straight lines
  12. 16. A polygon with 5 sides
  13. 18. A triangle with all sides of different lengths.