Triangles

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Across
  1. 3. The longest side of a triangle is opposite the ______ angle.
  2. 7. The converse of the __________ ________ can help classify a triangle.
  3. 10. Each exterior angle equals the sum of the two ______ _____ angles.
  4. 12. A triangle with no equal sides or angles.
  5. 13. A triangle with three equal sides is an _________ triangle.
  6. 15. A triangle with all angles less than 90 degrees is an _____ triangle.
Down
  1. 1. In a triangle the shortest side is ________ the smallest angle.
  2. 2. A triangle with two equal sides.
  3. 4. The triangle ____ theorem says that the sum of all interior angles of a triangle is 180 degrees.
  4. 5. The sum of the _________ angles of a triangle equals 180 degrees.
  5. 6. The triangle __________ theorem says that the sum of any 2 sides must be greater than the third side.
  6. 8. A polygon with only 3 sides.
  7. 9. A triangle with one angle that is greater than 90 but less than 180 degrees.
  8. 11. A triangle with one angle measuring exactly 90 degrees is a _____ triangle.
  9. 14. The sum of the _________ angles of a triangle equals 360 degrees.