If the sides of the Cevian triangle are extended, they intersect the sides of the ABC in three new points
[math]Q_A[/math], [math]Q_B[/math], and [math]Q_C[/math] (or at the infinite point). These three points do not form a triangle, but are collinear.
The line containing these points is called the [b]Axis of Perspective[/b] or the [b]Tripolar Line[/b].
Notice that [math]Q_A[/math] is collinear with B and C and with [math]C_P[/math] and [math]B_P[/math], making [math]Q_A[/math] a point of concurrency.
