geometry crossword puzzle

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Across
  1. 7. a polygon having six sides and six angles
  2. 8. a rectangle having all four sides of equal length
  3. 9. Line Segments
  4. 11. a closed plane curve consisting of all points at a given distance from a point within it called the center
  5. 14. a continuous extent of length
  6. 15. Angle a 90 degree angle
Down
  1. 1. an equilateral parallelogram having oblique angles
  2. 2. a quadrilateral plane figure having two parallel and two nonparallel sides
  3. 3. Triangle a triangle which has two sides equal
  4. 4. Angle an angle less than 90 degrees but greater than 0 degrees
  5. 5. a straight line extending from the center of a circle or sphere to the circumference or surface
  6. 6. the line segment between two points on a given curve
  7. 10. a position in space
  8. 12. the part of a straight line considered as originating at a point on the line and as extending in one direction from that point
  9. 13. the intersection point of two sides of a plane figure