Draw rough sketches for the following:
(a) In Δ ABC, BE is a median.
(b) In Δ PQR, PQ and PR are altitudes of the triangle.
(c) In Δ XYZ, YL is an altitude in the exterior of the triangle.
(a) Here, BE is a median in ΔABC and AE = EC.
(b) Here, PQ and PR are the altitudes of the ΔPQR and RP ⊥ QP.
(c) YL is an altitude in the exterior of Δ XYZ.