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Math Triangle stuff

QuestionAnswer
Concurrent lines 2 or more lines that intersect in one point
Point of concurrency the intersection point
Centroid the point of concurrency of the medians of a triangle
Median a segment that joins a vertex of a triangle to the midpoint of the opposite side
Circumcenter point of concurrency of the perpendicular bisectors of the sides of a triangle
Incenter point of concurrency of the bisectors of the angles of a triangle
Orthocenter point of concurrency of the altitudes of a triangle
altitude a perpendicular segment from a vertex of the triangle to the line containing the opposite side
Equilateral 3 congruent sides
Isosceles at least 2 congruent sides
Scalene no congruent sides
Equiangular 3 congruent angles
Acute 3 acute angles
Obtuse 1 obtuse angle
Right 1 right angle
3 sides triangle
4 sides quadrilateral
5 sides pentagon
6 sides hexagon
7 sides heptagon
8 sides octagon
9 sides nonagon
10 sides decagon
11 sides hendecagon
12 sides dodecagon
5 segments associated with a triangle 1. perpendicular bisectors 2. angle bisectors 3. medians 4. altitudes 5. midsegments
perpendicular bisector a segment that is perpendicular to a side of a triangle at the midpoint of the side
angle bisector a segment that bisects an angle of a triangle
median a segment whose endpoints are a vertex of the triangle and the midpoint of the opposite side
altitude the perpendicular segment from a vertex to the opposite side or a line containing the opposite side
midsegment segment that connects the midpoints of any two sides of a triangle
Created by: emilyradke