All regular polygons have equal sides.
In addition there are others, such as a rhombus, which also have equal sides but are not regular because their angles are not all the same. There is no generic name for such "squashed" polygons.
A semi-circle is actually a specific type of shape known as a "regular" shape. A regular shape is one that has all sides and angles equal. In the case of a semi-circle, it has a curved side and a straight side, but the curved side is a perfectly round half-circle, making it a regular shape. Irregular shapes, on the other hand, do not have sides or angles that are equal.
The shape that has not got equal side is a rectangle
It is an irregular shape or polygon that doesn't have all sides equal
Here are three: equilateral triangle, square, and cube
it has to have equal angles, not side lengths. otherwise it would just be two of the same shape
Pentagon ,,,, 180 digr
The answer depends on what shape the question is about.
An isosceles triangle is one of them
It is polygon but this type of shape is a nonagon.
square
An isosceles triangle has two equal sides and one different side.
An EQUILATERAL TRIANGLE