Foundational Words of Geometry

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Across
  1. 2. goes in one straight direction
  2. 4. what you see in a mirror
  3. 5. always the same distance apart
  4. 9. y-y₁=m(x-x₁)
  5. 10. intersects at 90 degrees
  6. 11. 180 degrees
Down
  1. 1. doesn't intercept/not perpendicular
  2. 3. another word for a dot
  3. 5. flat surface
  4. 6. bends at 90 degrees
  5. 7. Y=mx+b
  6. 8. bounded by 2 distinct points