Chapter 13

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Across
  1. 2. a template that you can cut and fold to make a model of a three-dimensional object
  2. 6. a three-dimensional object made up of four triangular faces
  3. 7. the flat surface of a three-dimensional object
  4. 8. a ball, for example
  5. 9. a box that has six faces, for example
  6. 10. a three-dimensional object where the base is a polygon and the sides are triangles that meet at the apex
Down
  1. 1. a three-dimensional object with two circular faces connected by a curved face.
  2. 3. a straight or curved line where two faces meet
  3. 4. the point or corner where three or more faces meet
  4. 5. shapes a polygon where at least one side or shape is different from the other sides or angles