2d shapes that do not have equal sides do not usually have special names.
rectangle
A septagon or a heptagon
Hectogon
the answer is 8
Squares
2D - Nonagon 3D - Nonahedron
isoceles triandle, square
No
Square and rhombus.
in 2d shapes a quadrilateral
A triangle as no other 2d shape can have 3 sides.