See the Related Link.
a heptogon is a seven sided hexogon
A quadrangle is a shape with 4 angles, such as a square, rectangle, or paralellogram. A four sided shape is called a quadrilateral.
A pentagon is a five-sided figure.
A 3 dimensional triangle is called a pyramid, otherwise a 2D three sided polygon shape is exactly what you called it, a triangle.
To look at it, you could never tell it from a circle.
there are lots of seven sided shapes! I can't tell you how it looks like because there are lots!
A six sided shape could look like a Hexagon
it look like a fifty sided shape
A HECTOGON IS A 100 SIDED SHAPE! A HECTOGON IS A 100 SIDED SHAPE!
Pentagon shape
A 16 sided shape could look like anything as long as there are 16 sides and they are connected to one another.
A quadrangle is a 4 sided shape.
an octagon
a 25 sided shape
A seven-sided shape is called a heptagon. It has seven straight edges and seven vertices. When drawn, it can appear regular with equal sides and angles, or irregular with varying lengths and angles. The heptagon can be found in various contexts, such as architecture and design.
It can look like a four-sided shape with five sides or a five-sided shape with four sides. The term is self-contradictory and so such a shape cannot exist!
A heptagon