Geometry

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Across
  1. 1. Identical in size and shape
  2. 3. of equal importance, rank, or degree
  3. 5. a straight line that intersects a curve at two or more points
  4. 7. intersection point of two sides of a plane figure
  5. 9. a polyhedron with two congruent and parallel faces
  6. 11. a position in a line
  7. 12. a polygon with four equal sides and four right angles
  8. 14. a line enclosing a plane area
  9. 15. lying in the same plane
  10. 16. the length of the closed curve of a circle
Down
  1. 2. a straight line extending from the center of a circle
  2. 3. a shape with a circular base and sides tapering to a point
  3. 4. a continuous portion of a circle
  4. 6. a line that touches a curve at only one point
  5. 8. the part of a straight line considered as originating at a point on the line and as extending in one direction from that point
  6. 10. be at an angle
  7. 12. a round three-dimensional closed surface
  8. 13. a point equidistant from the ends of a line or the extremities of a figure
  9. 15. the line segment between two points on a given curve
  10. 17. a surface generated by rotating a line around a fixed line