You may have three of the following in a triangle: Altitudes, Angle Bisectors, Medians, and Perpendicular Bisectors. The difference is determined by the conditions they meet in the triangle.
An altitude is drawn from the vertex to the opposite side forming a right angle with the line containing that side. It can go through the interior, the side, or the exterior. An angle bisector goes from the vertex to the opposite side, dividing in two congruent halfs the angle. A median is drawn from the vertex to the midpoint of the opposite side. Finally, the perpendicular bisector is a line or segment that forms a right angle with the side.
Drag any vertex in any of the triangles to verify that they meet the definitions.
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