Potm

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Across
  1. 2. a triangle which has two sides equal
  2. 4. a rectangle having all four sides of equal length
  3. 13. line segments that cross each other
  4. 15. a quadrilateral plane figure having two parallel and two nonparallel sides
  5. 17. a quadrilateral having both pairs of opposite sides parallel to each other
  6. 18. a 90 degree angle
  7. 19. an angle less than 90 degrees but greater than 0 degrees
  8. 20. one part of a line
  9. 21. the intersection point of two sides of a plane figure
  10. 23. a straight line extending from the center of a circle or sphere to the circumference or surface
Down
  1. 1. a symbol and placeholder for a quantity that may change
  2. 3. a triangle having three unequal sides and angles
  3. 5. a polygon having six sides and six angles
  4. 6. a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end
  5. 7. a triangle with all sides equal and all angles equal
  6. 8. a polygon with 5 sides and 5 angles
  7. 9. a position in space
  8. 10. a polygon having eight angles and eight sides
  9. 11. a triangle with one internal angle equal to 90 degrees
  10. 12. a parallelogram having four right angles
  11. 14. a continuous extent of length
  12. 16. a closed plane curve consisting of all points at a given distance from a point within it called the center
  13. 22. the part of a straight line considered as originating at a point on the line and as extending in one direction from that point