They are closed 2 dimensional shapes whose sides are all straight lines. They can have 3 or more sides.
Shapes which can be measured in 3 directions are called three-dimensional shapes. These shapes are also called solids. Length, width, and height (or depth or thickness) are the three measurements of the three-dimensional shapes. These are the part of three-dimensional geometry.
Two dimensional shapes are those that do not have DEPTH. They have only LENGTH and WIDTH whereas a three dimensional shape has LENGTH, WIDTH and DEPTH.
They are both 3-dimensional shapes.
They have one fewer dimension; they lack depth.
Many shapes have curves. Some curved shapes include:circle (2-dimensional)cone (3-dimensional)sphere (3-dimensional)cylinder (3-dimensional)
3 dimensional shapes have breadth, width and depth whereas 2 dimensional shapes have only breadth and width
2 dimensional shapes use the x and y planes where as 3 dimensional shapes use x, y and z planes.
You know how 2-dimensional shapes are flat right? Well 3-dimensional means that it can go to and from you also.
There are infinitely many different plane figures that can be made up of 2-dimensional shapes - provided that they are all in the same plane. There cannot be any 3-dimensional shapes involved.
No because isosceles triangles are 2 dimensional shapes.
No.Faces relate to 3-dimensional objects, for example a tetrahedron, a cube. They are the 2-dimensional shapes that make up the surface of a 3-dimensional objectA triangle can be a face though, for example, a tetrahedron is made up of 4 triangular faces.
all regular polygons
Perimeter is a concept which is relevant to closed 2-dimensional shapes, not 3 dimensional objects.