Unit Two vocabulary - triangle properties

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Across
  1. 2. ________________ bisector: A line segment or ray that divides a segment into two equal parts and makes a right angle with the segment
  2. 4. the point at which the 3 perpendicular bisectors intersect. It is equidistant from the vertices of the triangle.
  3. 8. ________________ bisector: a segment line or ray that divides an angle exactly in half
  4. 9. the point at which the 3 medians intersect. It is the center of gravity for a triangle, the balancing point.
  5. 11. _______ triangle: all angles have the same measurement, 60 degrees.
  6. 14. the __________ side is opposite the smallest angle in a triangle
  7. 15. Triangle inequality theorem: given 2 sides of a triangle, the third side must be greater than the _____________of the two side lengths and less than the sum of the 2 side lengths.
  8. 16. A segment that connects the midpoints of two sides
  9. 17. _________ triangle: a triangle that has a right angle.
  10. 18. A segment that connects a vertex of a triangle to the opposite side so that it is perpendicular to that side
  11. 20. Triangle angle ____ theorem: all three angles of a triangle always add up to 180 degrees.
  12. 21. the point at which the 3 altitudes of a triangle intersect.
  13. 22. _______ triangle: all angles are less than 90 degrees
Down
  1. 1. _______ triangle: all three sides are the same length. Also called equiangular.
  2. 3. _______ triangle: all three sides of the triangle are different lengths.
  3. 5. __________ theorem if 2 sides of two triangles are congruent to each other, the triangle with the largest angle between the two side lengths has the longest 3rd side
  4. 6. A segment that connects a vertex of a triangle to the midpoint of the opposite side.
  5. 7. _______ triangle: one angle is greater than 90 degrees
  6. 10. _______ triangle: a triangle with two sides congruent and the angles across from those sides are also congruent.
  7. 12. _______ angle of a triangle theorem: any exterior angle of a triangle is equal to the sum of the 2 remote interior angles.
  8. 13. the point at which the 3 angle bisectors intersect. It is equidistant from each of the sides.
  9. 19. the __________ side is opposite the biggest angle in a triangle