We report multiterminal measurements in a ballistic
bilayer graphene
(BLG) channel, where multiple spin- and valley-degenerate quantum
point contacts (QPCs) are defined by electrostatic gating. By patterning
QPCs of different shapes along different crystallographic directions,
we study the effect of size quantization and trigonal warping on 
transverse electron focusing (TEF). Our TEF spectra show eight clear
peaks with comparable amplitudes and weak signatures of quantum interference
at the lowest temperature, indicating that reflections at the gate-defined
edges are specular, and transport is phase coherent. The temperature
dependence of the focusing signal shows that, despite the small gate-induced
bandgaps in our sample (≲45 meV), several peaks are visible
up to 100 K. The achievement of specular reflection, which is expected
to preserve the pseudospin information of the electron jets, is promising
for the realization of ballistic interconnects for new valleytronic
devices.