Geometry Vocabulary words

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Across
  1. 3. polygons with 4 sides
  2. 4. to arrange groups based on properties
  3. 6. an angle whose measure is exactly 90 degrees
  4. 7. a triangle whose angles are ALL acute angles
  5. 13. a triangle in which one angle is an obtuse angle
  6. 14. an angle whose measure is between 90 and 180 degrees
  7. 15. a triangle which one angle is a right angle
  8. 16. a quadrilateral that has exactly one pair of parallel sides
Down
  1. 1. a triangle in which no sides have the same length
  2. 2. a triangle whose sides all have the same length
  3. 5. angle an angle whose measure is between 0 and 90 degrees
  4. 6. a parallelogram with opposite sides congruent and 4 right angles
  5. 8. a parallelogram with 4 right angles and ALL sides are congruent
  6. 9. a triangle with at least two sides of the same length
  7. 10. a parallelogram with all sides the same length
  8. 11. a closed plane figure made up of line segments
  9. 12. a quadrilateral with both pairs of opposite sides parallel and equal in length