8th Grade - Ch. 12: 3-D Figures

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Across
  1. 3. two figures that have the same shape and their corresponding linear measures are proportional
  2. 6. the altitude or height of each lateral face
  3. 7. a 2-D flat surface that extends in all directions
  4. 11. a solid with flat surfaces that are polygons
  5. 13. when a plane intersects a sphere so that it contains the center of the sphere
  6. 16. each great circle separates a sphere into two congruent halves
  7. 17. a polyhedron with one base that is any polygon and the other faces are triangles
  8. 18. the sum of the lateral area plus the area of the bases
  9. 20. a 3-D figure with congruent, parallel bases that are circles connected with a curved side
  10. 21. the sum of the areas of the lateral faces
  11. 22. where three or more planes intersect at a point
Down
  1. 1. the measure of space occupied by a 3-D region
  2. 2. the intersection of a figure and the plane
  3. 4. faces that are not bases
  4. 5. the shape that results from the angled slice through a cone
  5. 8. a flat surface
  6. 9. a set of points in space that are a given distance from the center
  7. 10. one circular base and a vertex connected by a curved side
  8. 12. a polyhedron with two parallel, congruent faces called bases that are polygons
  9. 14. a pyramid whose base is a regular polygon
  10. 15. point of view
  11. 19. where two planes intersect in a line