Geometry Extra Credit

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Across
  1. 1. angles that add up to 90
  2. 3. part of a line that starts at an endpoint and extends forever in one direction
  3. 8. crossing lines that create a 90 degree angle
  4. 10. a flat surface that has no thickness and extends forever
  5. 11. part of a line
  6. 13. names a location
  7. 14. path that is straight, has no thickness, and extends forever
  8. 15. points that lie on the same line
  9. 16. two lines that have the same slope and never touch
Down
  1. 2. point on the end of a segment; starting point of a ray
  2. 4. two rays with a common endpoint called a vertex
  3. 5. same length or measure
  4. 6. angles that add up to 180
  5. 7. two rays that share the same endpoint and for a line
  6. 9. a shape with at least three straight sides and angles
  7. 12. the amount of space that a substance or object occupies, or that is enclosed within a 3D figure