it a triangle as a 2d shape
It will look like a 2D equilateral triangle if it is a triangular based pyramid which is called a tetrahedron.
A prism, by definition, is 3D. You cannot have a 2D prism.
A triangle as no other 2d shape can have 3 sides.
A triangle
Yes a triangle is a 2D polygon shape
A 3 dimensional triangle is called a pyramid, otherwise a 2D three sided polygon shape is exactly what you called it, a triangle.
it a triangle as a 2d shape
It will look like a 2D equilateral triangle if it is a triangular based pyramid which is called a tetrahedron.
A prism, by definition, is 3D. You cannot have a 2D prism.
it can have 1 if it is a right triangle.
A triangle as no other 2d shape can have 3 sides.
a triangle
One
A triangle
a pyramid is a 3D objecta triangle is a 2D object
An equilateral triangle.