Geometry Crossword Puzzle

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Across
  1. 1. The quantity of units on the surface of a shape
  2. 3. 4 congruent sides and angles
  3. 4. Two lines going in exactly the same direction, right next to each other
  4. 11. A shape with 6 congruent sides
  5. 12. Area= Base x Height % 2
  6. 14. A shape with two sets of parallel sides
  7. 15. Another word for a corner of a shape
  8. 17. A geometrical term for "the same"
  9. 19. Twice the radius
Down
  1. 1. angle Less than 90 degrees
  2. 2. angle More than 90 degrees
  3. 5. Like a square, but longer on two sides
  4. 6. A shape with 4 sides
  5. 7. Area= Base1 + Base2 x Height % 2
  6. 8. A shape with 5 congruent sides
  7. 9. The quantity of units filling the whole shape
  8. 10. Area= PI x Radius squared
  9. 13. Geometrical term for a diamond
  10. 16. angle Exactly 90 degrees
  11. 18. Half the diameter