A pentagon
A hexahedron is a three-dimensional geometric shape having six sides; a hexagon is a two-dimensional six-sided shape.
A geometric shape with 4 sides and 4 vertices is a 4-sided figure, a quadrilateral.
A cereal box is a six sided rectangular polyhedron called a rectangular cuboid. Each of its faces has the shape of a rectangle.
A kite or a rhobus. It only looks like a rhombus if you turn it on its side.
A million sided shape shape is called a megagon.
A five sided geometric shape is called a pentagon.
The name of an eleven sided geometric shape is a Hendecagon or endecagon.
A nonagon is a nine sided shape.
A hexahedron is a three-dimensional geometric shape having six sides; a hexagon is a two-dimensional six-sided shape.
Pentagon.
Octagon.
A heptagon.
You can call a 101-sided shape a hecatontakaihenagon. The "hecto-" in the word means "one hundred" and the "henagon" means "one-sided geometric shape."
Trapezoid
A geometric shape with Multiple Personality Disorder.
The name of a four sided shape that looks like a kite is a diamond.
An octagon is an eight sided geometric shape.