Math vocab crossword

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Across
  1. 2. a one dimensional line with arrowheads
  2. 3. has one end point and goes on in one direction for eternity
  3. 5. A flat surface made up of two dimensions
  4. 7. Words that do not have formal definitions
  5. 8. a POINT that shows a end of a line ECT
  6. 9. are points that lie in the same plane
  7. 10. a location in space
Down
  1. 1. points that lie on the same line
  2. 4. where two or more lines meet
  3. 6. a part of a line