Geometry Crossword Puzzle

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