Geometry

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Across
  1. 2. a solid geometric figure whose two end faces are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms
  2. 7. a plane figure with six straight sides and angles
  3. 11. a round solid figure, or its surface, with every point on its surface equidistant from its center
  4. 12. a plane figure with four straight sides and four angles
  5. 13. a plane figure with four straight sides and four right angles, especially one with unequal adjacent sides, in contrast to a square.
  6. 15. a straight or curved continuous extent of length without breadth
  7. 16. a plane figure with ten straight sides and ten angles
  8. 17. a plane figure with nine straight sides and nine angles
  9. 19. a quadrilateral with only one pair of parallel sides
  10. 21. a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints
  11. 23. a solid geometric figure with straight parallel sides and a circular or oval cross section
  12. 25. a plane figure with at least three straight sides and angles
  13. 26. a surface or solid figure generated by the straight lines that pass from a circle or other closed curve to a single point not in the same plane as the curve
  14. 27. a solid which has six rectangular faces at right angles to each other
Down
  1. 1. a plane figure with eight straight sides and eight angles
  2. 3. any of a set of straight lines passing through one point
  3. 4. a plane figure with four equal straight sides and four right angles
  4. 5. a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides
  5. 6. the quantity that expresses the extent of a two-dimensional figure or shape
  6. 8. a polyhedron of which one face is a polygon of any number of sides, and the other faces are triangles with a common vertex
  7. 9. the amount of space that a substance or object occupies
  8. 10. a plane figure with seven straight sides and angles
  9. 14. the space between two intersecting lines or surfaces at or close to the point where they meet
  10. 18. a plane figure with three straight sides and three angles
  11. 20. a plane figure with five straight sides and five angles
  12. 22. a symmetrical three-dimensional shape, either solid or hollow, contained by six equal squares
  13. 24. a four-sided plane rectilinear figure with opposite sides parallel