Geometry

1234567
Across
  1. 3. Part of a straight line
  2. 4. A flat two dimensional surface
  3. 5. Used to measure a line
  4. 7. A position on a plane
Down
  1. 1. Points that lie on the same line
  2. 2. Measure of rotation
  3. 5. Part of a line that has one endpoint
  4. 6. A straight that goes on forever