symmetric
symmetrical
approaching
asymptotic
centripetal
centrolineal
concurrent
confluent
confocal
connivent
converging
divergent
focal
meeting
mutually approaching
radiate
radiated
radiating
radiative
rayed
tangent
tangential
uniting
pneumatic tire
pneumatic tyre
angular
axial
facial
femoral
geometric
half-inch
horizontal
linear
longitudinal
oblique
optical
orbital
peripheral
planar
rotary
rotational
spatial
spinal
tibial
upward