# Special lines (segments or rays) in a triangle.

Shows altitude, perpendicular bisector, angle bisector, and median in a triangle.

Can you get two of these special lines to coincide? Three? All 4? How can that happen?

Shows altitude, perpendicular bisector, angle bisector, and median in a triangle.

Can you get two of these special lines to coincide? Three? All 4? How can that happen?