Ben and Margaret's Crossword!

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Across
  1. 4. If two parallel lines are cut by a transversal same side interior angles are ______.
  2. 5. If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent.
  3. 7. √ab
  4. 9. Two angles with a sum of 90 degrees
  5. 10. side opposite the 90 degree angle in a right triangle
  6. 12. (0,0)
  7. 13. Given
  8. 15. Ms. Maclean's weapon
  9. 17. a(n) ____ spheroid is a flattened sphere
  10. 18. Rise over run
  11. 19. I(x)=x
Down
  1. 1. If two parallel lines are cut by a transverse, _____ ______ angles are congruent.
  2. 2. A triangular array constructed by summing adjacent elements in preceding rows.
  3. 3. A statement which is taken to be true without proof
  4. 6. a method that uses only coefficients to display the coefficient to display the process of dividing a polynomial in x by x-c.
  5. 8. Any student: square root of x. ms maclean: ___ ____
  6. 11. x-yi is the ____ of x+yi
  7. 14. Person who first came up with the concept of zero
  8. 16. If two parallel planes are cut by a third plane, then the lines of intersection are____.