Geometry Crossword Puzzle

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Across
  1. 1. Rectangle with four congruent sides
  2. 5. angle whose measure is 90 degrees
  3. 6. set consisting of two points A and B and all the points in between
  4. 9. Cone with a polygonal region as a base
  5. 10. Any curve that intersects a segment only at the midpoint
  6. 11. M if A-M-B and AM=MB
  7. 12. Chord that passes through the center of a circle
  8. 16. Union of two distinct rays with a common end-point
  9. 18. Cylinder with polygonal regions as bases
Down
  1. 1. One of the segments that forms a polygon
  2. 2. parallelogram with four congruent sides
  3. 3. angle whose measure is greater than 90 degrees
  4. 4. Segment having both endpoints on a circle
  5. 7. Quadrilateral with a pair of parallel opposite sides
  6. 8. Set of all points on a line on a given side of a given point of the line
  7. 13. Angle with a measure less than 90 degrees
  8. 14. Segment that connected a point on a circle with the center of the circle
  9. 15. Union of a half-line and its origin
  10. 17. Curve that is a subset of a circle