Here are three: equilateral triangle, square, and cube
The shape that has not got equal side is a rectangle
it has to have equal angles, not side lengths. otherwise it would just be two of the same shape
Pentagon ,,,, 180 digr
An isosceles triangle is one of them
The answer depends on what shape the question is about.
An isosceles triangle has two equal sides and one different side.
An EQUILATERAL TRIANGLE
regular pentagon maybe maybe not
Isoceles Triangle
If all side lengths are changed so the new shape is proportionately equal, the angles don't change. But if it's not proportion. equal, then the angles will be different
It is a square or a rhombus of which both have 4 equal side lengths.
If a shape has equal angles and side lengths then it is known as a regular polygon