Well its still a 2d because its like a normal square
hexagon
A shape with 100 sides is called a hecatontagon. The prefix "hecto-" means 100 in Greek, so a hecatontagon is a polygon with 100 sides. It is a regular polygon, meaning all its sides are of equal length and all its angles are equal.
There is no specific name, except in the case of a triangle: scalene. You should not call it simply an irregular polygon, because a regular polygon implies that ALL sides are equal and ALL angles are equal. So a rhombus, where all four sides are equal, is still irregular.
A better name for "corners" would be angles, but the shape's name would be a hexagon
A shape with 7 sides is a heptagon
a rhombus
triangle isosceles triangle
A pentagon. If the sides and angles are equal it is a REGULAR pentagon.
A polygon with four equal angles and sides is a square.
You just call it a decagon. If all the angles and sides are equal then it's a regular decagon. If not, it's an irregular decagon.
Rhombuses are paralellograms. Also, they're what you might call a diamond.* * * * *Not a particularly useful answer since a rectangle is also a parallelogram. The two differences are:all the sides of a rhombus are of equal length while in a rectangle opposite sides are equal but adjacent sides are usually not equal (if they are, then the shape is a square);all the angles of a rectangle are right angles while in a rhombus opposite angles are equal but adjacent angles are usually not equal (if they are, then the shape is a square).
A regular shape.
A shape with five sides would be a pentagon, but a shape can not have 5 right angles. Squares and Rectangles are both shapes with 4 sides and 4 right angles. They are the only shape with the same amount of right angles as there is sides.
hexagon
A decagon.
A shape with 100 sides is called a hecatontagon. The prefix "hecto-" means 100 in Greek, so a hecatontagon is a polygon with 100 sides. It is a regular polygon, meaning all its sides are of equal length and all its angles are equal.
It is an irregular shape