No. Vortex is a noun.
Adjective angles? Maybe you meant adjacent angles. Adjacent angles are angles that share a side and a vortex (corner point).| /| /|/____________Pretty bad text drawin up there, but you see 2 angles sharing one side, and they also share a vortex.
There is no antonym for vortex.
Vortex already is a singular form. The plural can be vortexes or vortices. Both are equally correct.
The singular form of vortex is "vortex" and the plural form is "vortices."
In the eye of the vortex
Vortex.
Look at that Vortex go spinning!
Vortex breaker prevents circular flow, this circular flow is known as vortex. Vortex breaker used in storage vessels, knockout drum, etc
The plural form of vortex is vortices.
Godspeed the Vortex was created in 1993.
Vortex Comics was created in 1982.
The Vortex Blaster was created in 1960.