Geometry

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Across
  1. 4. points points that lie in the same plane
  2. 8. part of a line that has 2 endpoints
  3. 10. 2 lines that form a right angle
  4. 12. figures that lie in the same plane
Down
  1. 1. 2 angles whose measures add to 180 degrees
  2. 2. the vertical axis of a coordinate plane
  3. 3. same size and same shape
  4. 5. where the y and x axis meet (0,0)
  5. 6. 2 angles whose measures add to 90 degrees
  6. 7. two lines in the same plane that never intersect
  7. 9. a shape with no edges or corners
  8. 11. a location or position