GEOMETRY CROSS WORD PUZZLE

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Across
  1. 3. the opposite angles formed by two intersecting lines
  2. 7. where two figures intersect
  3. 9. middle number in a group of numbers
  4. 10. a plane with at least three straight lines and angles
  5. 11. the amount of turn between two points the have a common endpoint
Down
  1. 1. a triangle with one right angle
  2. 2. points on the same path
  3. 4. line that has one point then has no end
  4. 5. a triangle with three acute angles
  5. 6. a shape with four right angles
  6. 8. add all together then divide