quadrilateral

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Across
  1. 7. a geometric figure
  2. 10. angles that add up to 90 degrees
  3. 13. non-vertex angles are congruent
  4. 15. an equilateral rectangle
  5. 18. angels that add up to 180
  6. 19. trapezoid with congruent legs
  7. 20. angles that are less than 90 digrees
Down
  1. 1. 2 lines that intersect at 90-degree angle
  2. 2. 2 lines that will never touch
  3. 3. angles of a shape that are equal
  4. 4. a pair of opposite equal angles formed by 2 intersecting lines
  5. 5. a quadrilateral with two pairs of parallel lines
  6. 6. only 2 pairs of congruent lines with 90 degree angles
  7. 8. a line that divides an angle, making two equal triangles
  8. 9. angles that are on the inside of a shape
  9. 11. that are bigger than 90 digrees
  10. 12. angles that equal 90 digrees
  11. 14. 4 sides
  12. 16. one set of parallel lines
  13. 17. congruent sides with 2 sets of parallel lines