Geometry classwork

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Across
  1. 2. a line with a starting point but no end point
  2. 4. A rule in math
  3. 5. the space between two intersecting lines
  4. 6. two of these equal 180 degrees
  5. 7. two lines which will never intersect
Down
  1. 1. the same
  2. 3. two of these equal 90 degrees
  3. 4. three sides shape