isoseles triangle
Yes,all of the sides of a polygon are the same shape.
if something is same size, same shape means that it is congruent or symmetrical.
It is a general polygon. Unlike with triangles, there is no special name for such a shape.
a parallelogram that has the same shape but not the same size called "similar". This means the angles are equal in both shapes but the sides are different.
rectangle means same size and shape
Same shape, same size is called, "Congruent" (konn-GREW-unt)
Congruent
I guess you mean with ALL sides the same size it's an equilateral triangle
hexagon
similar
Absolutely !
If the triangle is the same size, and it's sides are congruent to the other, then yes they are congruent to each other.