Geometry

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Across
  1. 3. union of two rays with a common endpoint.
  2. 5. the kind of points lie on one plane.
  3. 8. the kind of points that lie all on one line.
  4. 9. set of points which go on endlessly in both directions.
  5. 10. endpoint of angle is called
Down
  1. 1. represented by any flat surface and extends indefinitely in all directions.
  2. 2. it has two endpoints.
  3. 4. the kind of points that do not lie on one plane.
  4. 6. no size or dimensions – no width, no length, no height.
  5. 7. part of a line that has one endpoint.