A shape with straight sides is called a polygon. But it can have 3 or 4 sides as well.
polygon
PENTAGON
A shape that has more sides than a triangle or rectangle but fewer angles than a hexagon is a pentagon. A pentagon has five sides and five angles, which fits the criteria, as a triangle has three sides and angles, a rectangle has four sides and angles, and a hexagon has six sides and angles.
Many options: any regular polygon with 6 or more sides, plus selected irregular polygons with five or more sides.
There are an infinite number. The simplest is a pentagon, with five sides.
PENTAGON
polygon
A polygon.
a pentagon is a polygon with 5 sides not less or more.
A shape with eight straight sides is called on octagon. There is not another specific name, but you could call it the more generic name: polygon.
Many options: any regular polygon with 6 or more sides, plus selected irregular polygons with five or more sides.
A shape with 7 sides.
There are an infinite number. The simplest is a pentagon, with five sides.
A shape with four sides has four vertices and a shape with three sides has three vertices, so a shape with four sides has more vertices than a shape with three sides.
A polygon is a shape with more than two sides. A pentagon has five sides. So a pentagon is a type of polygon.
There is no such thing as the shape with the 'most' sides. No matter how many sides you draw a shape with, somebody else can easily come along and draw a shape with one or two or fifty more sides. The more sides a shape has, the more it gets to look like a circle.
Shape has fewer than 6 sides