oval, circle, rhombus, diamond, pentagon, hexagon, all of the -gons higher than that...
A square
a square
A cyclic kite. A kite is cyclic if it has only two right angles.
A 2D square □
It is a rhombus or a parallelogram.
kite :)
A rhombus is one of them
It can have none, 1 or 2.
A Parallelogram.
An irregular quadrilateral.
a triangle
octagon