Best Answer

A 3-sided shape is called a triangle.

or Polygon in general.

Q: What are the names of a 3 sided shape?

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Septagon or Heptagon = seven sided shape

A 3 sided shape is a triangle. A 4 sided shape could be a square or rectangle.

A 4 sided shape is classified as a quadrilateral.

A 4 sided shape has 4 vertices whereas a 3 sided shape has 3 vertices.

A shape in 2D with n sides is called an n-gon. In higher dimensions, a shape with n sides is called an n-sided polyhedron.

Related questions

Septagon or Heptagon = seven sided shape

A 3 sided shape is a triangle. A 4 sided shape could be a square or rectangle.

Answer: nonagon.

a PENTAGON

a 3 sided shape is a right angle triangle

A 6-sided shape is one kind of polygon. It can also be called a hexagon.

A 4 sided shape is classified as a quadrilateral.

A 4 sided shape has 4 vertices whereas a 3 sided shape has 3 vertices.

An octagon is an 8 sided 2 dimensional shape. A cylinder with the base of a hexagon (6 sided shape) would be an 8 sided 3 dimensional shape.

3 sided shapes are triangles

A shape in 2D with n sides is called an n-gon. In higher dimensions, a shape with n sides is called an n-sided polyhedron.

It's a 6 sided shape.