Arbelos or astroid, not sure which one you are looking for.
i need to finish my homework the answer to this a 7 letter word for a shape with equal sides
rhombus and squuare Although not a shape, in itself, the 7-letter adjective REGULAR means the shape has equal sides (and equal angles).
a shape with equal sides
Polygon
Octogon
circle The shape that does not have equal sides is a circle
what shape beginning with i does not have equal sides
i think that a circle is a shape with no equal sides
It is an irregular shape or polygon that doesn't have all sides equal
a shape with 5 equal sides is a pentagon
ashape with equal sides
scalene has no equal sides