Triangle from Perpindiculars
Geometry
Level
3
Triangle \(ABC\) has \( AB=AC \). \(D\) is the foot of the perpendicular from \(A\) to \(BC\). \(E\) is the foot of the perpendicular from \(B\) to \(AC\). \(AD\) and \(BE\) intersect at \(H\), the orthocenter of triangle \(ABC\). Let \(J \) be the midpoint of \(AH\). What is the measure (in degrees) of \(JED \)?
by
Calvin Lin