Elliot's Geometry crosswords.

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Across
  1. 3. The total space inside of a polygon.
  2. 4. A shape with eight sides
  3. 10. A 90 degree angle
  4. 15. A line that ends at two points
  5. 16. A triangle with three unequal sides
  6. 17. The measure of the rim of the circle
  7. 18. A 2D space
  8. 19. A statement that has been proven true
Down
  1. 1. A shape that bees like
  2. 2. A shape with four sides
  3. 5. An angle that is more than 90 degrees
  4. 6. An idea believed to be true
  5. 7. The sum of the length of all the sides of a polygon.
  6. 8. Opposite but math
  7. 9. An angle that is less than 90 degrees
  8. 11. A shape with four equal sides and four right angles
  9. 12. The measure from the base height of the triangle to the top height of the triangle.
  10. 13. A 1D location in space
  11. 14. Things that have the same shape
  12. 20. A line that extends infinitely in one direction from a point