Geometry terms

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Across
  1. 3. measurement for angles
  2. 4. instrument used to construct and measure plane angles
  3. 9. lines that meet at one point
  4. 10. straight one dimensional figure with no thickness that extends forever in one dimension
  5. 11. completely 2 dimensional line that extends forever in 2 dimensions, it has no thickness
  6. 12. a line with only one endpoint that extends infinitely in one direction
  7. 15. 180° angle
  8. 16. 90° angle
Down
  1. 1. a part cut off or separated from from a figure, line or plane
  2. 2. the middle area of a line
  3. 5. an object used to measure, or to draw a straight line between two points
  4. 6. lines that intersect at a 90° angle
  5. 7. a corner point formed by intersecting lines or planes
  6. 8. something formed by 2 lines, line segments or rays diverging from a vertex
  7. 13. 2 lines that go in the same direction that can never intersect
  8. 14. position or location on a plane