Geometry crossword puzzle

1234567891011121314151617181920
Across
  1. 1. Lines that intersect make 90
  2. 4. A shape with 3 sides
  3. 6. Angles that add up to be 90
  4. 8. angle An angle that is 90 degress
  5. 9. How many units can fill up an object
  6. 10. An infinitely long object with no width
  7. 12. A shape with no sides
  8. 13. Quadrilateral with 4 sides
  9. 14. A shape with 4 equal sides
  10. 15. Two sides of a triangle are equal
  11. 16. angle An angle smaller then 90 degress
  12. 18. The size of a surface
  13. 20. A triangle with a 90 degree angle
Down
  1. 2. All sides are equal
  2. 3. Two lines that will never touch
  3. 5. Perimeter of a circle
  4. 7. An angle larger then 90 degreess
  5. 11. A 180 degree angle
  6. 17. Identical in shape and size
  7. 19. The surrounding lengths of an object