Geometry Crossword!

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Across
  1. 2. a parallelogram with four equal sides
  2. 3. the length of the closed curve of a circle
  3. 4. a triangle whose interior angles are all acute
  4. 5. the space between two lines or planes that intersect
  5. 9. an angle between 90 and 180 degrees
  6. 10. a round three-dimensional closed surface
  7. 12. relation with respect to comparative quantity or magnitude
  8. 13. a polygon with four equal sides and four right angles
  9. 14. the extent of a 2-dimensional surface enclosed within a boundary
  10. 15. being everywhere equidistant and not intersecting
  11. 19. of equal importance, rank, or degree
  12. 21. a closed plane figure bounded by straight sides
  13. 22. a line enclosing a plane area
  14. 23. a three-sided polygon
  15. 24. be at an angle
  16. 25. a specific identifiable position in a continuum or series
  17. 26. an angle less than 90 degrees but more than 0 degrees
Down
  1. 1. a triangle with two equal sides
  2. 3. two angles whose sum is a right angle
  3. 6. a triangle that contains an obtuse interior angle
  4. 7. in or near an inner area
  5. 8. a four-sided polygon
  6. 11. the length of a straight line through the center of a circle
  7. 16. a continuous portion of a circle
  8. 17. corresponding in character or kind
  9. 18. elevation above sea level or above the earth's surface
  10. 20. a plane curve with every point equidistant from the center