Triangles

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Across
  1. 2. If all three pairs of corresponding sides are congruent, then the triangles are congruent by this theorem.
  2. 4. If two pairs of corresponding sides are congruent and the corresponding included angles are congruent, then the triangles are congruent by this theorem.
  3. 6. Three or more lines/segments/rays that intersect at a common point
  4. 9. The point of concurrency where the altitudes of a triangle intersect.
  5. 11. If two sides of a triangle are congruent, then the angles opposite to those sides are congruent
  6. 15. The point of concurrency where the angle bisectors of a triangle intersect.
  7. 16. The intersection point of concurrent lines
  8. 17. If two sides of one triangle are congruent to two sides of another triangle, and the included angles are not congruent, then the longer third side between the two triangles is opposite the larger included angles.
  9. 18. The point of concurrency where the perpendicular bisectors of a triangle intersect.
  10. 19. If two pairs of corresponding angles are congruent and a pair of corresponding included sides are congruent, then the triangles are congruent by this theorem.
Down
  1. 1. A triangle with two congruent sides and two congruent angles.
  2. 3. Inequality Theorem Let a and b be two lengths of sides in a triangle, c is the third side, and a ≤ b. The length of c is in the range b-a ＜c＜b+a
  3. 5. A line that intersects the vertex angle and is perpendicular to the opposite side
  4. 7. The point of concurrency where the medians of a triangle intersect.
  5. 8. Two figures with corresponding congruent sides and corresponding congruent angles.
  6. 10. If two pairs of corresponding angles are congruent and the corresponding sides are congruent, then the triangles are congruent by this theorem.
  7. 12. Corresponding Parts of Congruent Triangles are Congruent
  8. 13. If the hypotenuse and leg of one right triangle are congruent to the other right triangle’s hypotenuse and leg, then the triangles are congruent by this theorem.
  9. 14. Bisector Theorem If a point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment.