Geometry--Unit 4_Congruent Triangles Vocabulary Quizlet

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Across
  1. 4. In an isosceles triangle, the side opposite the vertex angle.
  2. 5. A triangle with one interior right angle (exactly 90°).
  3. 7. If two angles and a non-included side of one triangle are congruent to two angles and the corresponding non-included side of another triangle, then the triangles are congruent.
  4. 9. In a right triangle, the two sides that form the right angle. In an isosceles triangle, the two congruent sides.
  5. 11. A triangle where all three interior angles are acute (less than 90°).
  6. 12. The measure of an exterior angle of a triangle is equal to the sum of the measures of its two remote interior angles.
  7. 14. If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent.
  8. 16. A theorem stating that if two triangles are congruent, then each pair of corresponding parts (angles and sides) is also congruent.
  9. 17. If three sides of one triangle are congruent to three sides of another triangle, then the triangles are congruent.
  10. 19. A triangle with no congruent sides.
  11. 20. In an isosceles triangle, the two angles opposite the congruent sides, which are congruent to each other.
  12. 21. If the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and a leg of another right triangle, then the triangles are congruent.
Down
  1. 1. The sum of the measures of the interior angles of any triangle is 180°.
  2. 2. A triangle with two congruent sides.
  3. 3. A triangle in which all three interior angles are congruent (each measuring 60°).
  4. 6. A triangle in which all three sides are congruent.
  5. 8. Two triangles are congruent if all corresponding angles and corresponding sides are congruent.
  6. 10. The three line segments that connect the vertices to form the triangle.
  7. 13. A triangle with one interior obtuse angle (greater than 90°).
  8. 15. In an isosceles triangle, the angle formed by the two congruent legs.
  9. 18. 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.