according to me its octagon
Spherical
sphere
A very common shape: the triangle. It is a flat plane that has only 1 face and always has 3 vertices or corners.
Triangular prisim
No edges, no corners, but it is considered to have 1 face.
A rhombus has 4 corners and 1 face.
shpere
A sphere
A vertical line
a quadrilateral
A sphere.
A line. Or a circle