Geometry Unit Four and Beyond!

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Across
  1. 2. The longest leg of a right triangle.
  2. 7. A triangle with one right angle.
  3. 9. A triangle with three acute angles.
  4. 11. Interior angles of a triangle add to 180.
  5. 12. Two perpendicular lines intersect to form four right angles.
  6. 14. A triangle with one obtuse angle.
  7. 15. Used to prove two triangles are congruent using all their sides.
  8. 16. A triangle with no equal sides.
  9. 17. This theorem says that if a transversal is perpendicular to one of two parallel lines, it is perpendicular to the other.
  10. 19. If the hypotenuse and a ______ of two right triangles are congruent, so are the triangles.
  11. 21. AB = AB
  12. 23. A triangle with two legs and a base.
  13. 24. Beside.
  14. 25. Uses two sides and their contained angle to prove triangle congruence.
Down
  1. 1. A ____________ proof involves placing a figure in a coordinate plane.
  2. 3. A triangle with three equal angles.
  3. 4. If two triangles are congruent, all their corresponding sides and angles are congruent.
  4. 5. A triangle with three equal sides.
  5. 6. If two lines are perpendicular to the same line, they are ______ to each other.
  6. 8. If two sides of a triangle are congruent, so are the angles opposite them.
  7. 10. The measure of an exterior angle equals the sum of the nonadjacent interior angles.
  8. 12. If two triangles have two congruent angles, their third angles must also be congruent.
  9. 13. If two angles of a triangle are congruent, the sides ______ them are congruent.
  10. 18. The acute angles of a right triangle are ________.
  11. 20. Uses two angles and their contained side to prove triangles congruent.
  12. 22. A point joining two sides of a triangle.
  13. 24. Uses any two angles and one side to prove triangle congruence.