Sides AB and BC and median AD of atriangle ABC are respectively proportionalto sides PQ and QR and medianPM of
Δ PQR (see Fig. 6.41). Show that
Δ ABC ~ Δ PQR.
Median divides the opposite side
BD = and,
QM =
Given:
=
In ΔABD and ΔPQM,
ΔABD ΔPQM (By SSS similarity)
∠ABD = ∠PQM (Corresponding angles of similar triangles)
In ΔABC and ΔPQR,
∠ABD = ∠PQM (Proved above)
ΔABC ΔPQR (By SAS similarity)