a cylinder
a cylinder
sphere
A cylinder, depending if you think the curved part that goes around counts..
The simplest answer is a cylinder (although you could squish it a bit to make something slightly different). It has a curved rectangular face, two circular faces, and two curved edges.
triangular prism
a cylinder
A cylinder.
The mandible has a horse-shoe like shape with 2 upward curved edges.
a cylinder
A vertex is when 2 edges meet and make a curved line.
a circle
The mandible has a horse-shoe like shape with 2 upward curved edges.
Prism
A cube
sphere
It is A square ish shape... with curved edges