Five similar triangles
Take the arbitrary scalene triangle ABC. On side AB take the arbitrary point D.
Find (by construction) the two points I, J (on side AC), and two points K, L
(on side AC), such that
five triangles ABC, AJD, ADI, BDK, and BLD all are similar.
![[Graphics:Images/5simtri_gr_1.gif]](Images/5simtri_gr_1.gif)
Construction:
-
The segments JD and DK are parallel to sides CB and AC, respectively.
- Draw the circle through three points CDB. The point of intersection of the circle
with side AC gives the point I.
- Draw the circle through three points CDA. The point of intersection of the circle
with side BC gives the point L.
Converted by Mathematica
December 30, 2001