Chapter 5 Vocabulary Quiz

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Across
  1. 3. The parts (angles and sides) of congruent figures that are congruent.
  2. 4. If two angles of a triangle are congruent, then the sides ___________ those angles (the legs) are congruent.
  3. 5. A triangle is _______ if and only if it is equiangular.
  4. 10. A triangle with three congruent angles.
  5. 11. A triangle with two congruent sides.
  6. 13. The angle formed by the two legs of an isosceles triangle.
  7. 14. A triangle with one obtuse angle
  8. 16. The two acute angles of a right triangle are ________.
Down
  1. 1. A triangle with three acute angles
  2. 2. If two sides of a triangle are ___________, then the angles opposite those sides (the base angles) are congruent.
  3. 5. The _________ angle of a triangle is equal to the sum of the two nonadjacent interior angles.
  4. 6. A triangle with no congruent sides.
  5. 7. A triangle with one right angle
  6. 8. The two congruent sides of an isosceles triangle.
  7. 9. The ______ of the interior angles of any triangle is 180 degrees.
  8. 12. A statement that can be proved easily using a theorem.
  9. 15. The angles along the base of an isosceles triangle.