Geometry Crossword Puzzle

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Across
  1. 1. specifies only location; it has no length, width, or depth
  2. 5. a polygon with exactly four sides
  3. 6. is any polygon that is not concave
  4. 8. an angle with its vertex at the center of a circle
  5. 10. two given points
  6. 12. is the point where the three perpendicular bisectors meet
  7. 14. a triangle with two equal sides
  8. 16. a polygon with collapsed sides or dents
  9. 17. a segment that passes through the center and has its endpoints on the circle
  10. 18. the set of all points in a plane that are equidistant from a given point in the plane
Down
  1. 1. a closed three-dimensional figure
  2. 2. an intersection of a graph with one of the axes
  3. 3. the side of the triangle that is opposite to the right angle
  4. 4. a quadrilateral that has two pairs of opposite sides that are parallel
  5. 7. a line segment where two faces intersect
  6. 9. a segment connecting two consecutive midpoints of a triangle
  7. 11. a triangle with all three angles less than 90
  8. 13. any polygon that is not regular
  9. 14. is the point where the three angle bisectors meet
  10. 15. a polygon by which a solid object is bound