There is one curve.
one
convex
A sphere (ball) and an ovoid (egg).A sphere (ball) and an ovoid (egg).A sphere (ball) and an ovoid (egg).A sphere (ball) and an ovoid (egg).
A sphere has a face however, an arc has no face but has a single curve. Multiple arcs placed next to each other in an osscilating line have curves, without a face.
Many shapes have curves. Some curved shapes include:circle (2-dimensional)cone (3-dimensional)sphere (3-dimensional)cylinder (3-dimensional)
3 curves
Presumably no curves at all.
There are four curves in the spine. They are the Cervical, Thoracic, Lumbar and Pelvic curves.
there are 3 curves
It has 1 syllable.
Sphere is one syllable: sphere.
Oh, dude, a sphere has zero sides. Yeah, that's right, zero sides. It's all curves, man. So, if you were thinking a sphere had sides, like a square or a triangle, think again. It's just a smooth, round ball with no sides to count.