Mathematics

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Across
  1. 2. two rays that have a common endpoint that point in opposite directions
  2. 5. straight and has infinite length but don't have width and thickness with two arrows sides.
Down
  1. 1. it has only a location, size. but can be modeled by a dot.
  2. 3. a portion of a line that has one endpoint and it's named by the endpoint
  3. 4. portion of a line that has two endpoints