Geometry

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Across
  1. 2. a figure which is formed by two rays or lines that shares a common endpoint
  2. 3. the forms of objects which have boundary lines, angles and surfaces.
  3. 6. two or more lines that are always the same distance apart and never intersect
Down
  1. 1. the amount of space in a certain 3D object.
  2. 4. the total space taken up by a flat (2-D) surface or shape of an object.
  3. 5. a flat surface or area that extends infinitely in two dimensions and has no thickness.
  4. 7. a one-dimensional figure, which has length but no width.