Triangles

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Across
  1. 3. angles next to each other
  2. 8. cuts a side in half
  3. 9. The geometric term meaning "equal"
  4. 10. a triangle with three congruent sides
  5. 11. greater than 90 degrees
  6. 13. angles that are in the same position
  7. 16. angles that are opposite each other
  8. 18. on opposite sides of the transversal
Down
  1. 1. cuts an angle in half
  2. 2. property used in a proof to show a shared side
  3. 4. a shape with three sides
  4. 5. a set of angles outside a set of parallel lines
  5. 6. the side opposite of a right angle
  6. 7. a set of angles inside a set of parallel lines
  7. 9. on the same side of the transversal
  8. 12. a triangle with 2 congruent sides
  9. 14. less than 90 degrees
  10. 15. a triangle with no congruent sides
  11. 17. two column method to prove something