There is no specific name.
Any shape can have two equal sides.
hexagon
A shape with 7 sides is a heptagon
you call a two dimensional shape with six sides a hexagon
A shape with 8 sides is an octagon.
Triangle is a shape with three sides.
squares are equl on all sides
A regular shape.
a shape with nine sides is called nonagon
It is an irregular shape
A shape with straight sides is called a polygon. But it can have 3 or 4 sides as well.
A shape with 5 sides is a pentagon