In geometry, a deltahedron (plural deltahedra) is a polyhedron whose faces are all equilateral triangles. The name is taken from the Greek upper case delta (Δ), which has the shape of an equilateral triangle.
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PYRAMID
Triangular prism is one and another one is the rectangular prism
There are an infinite number of 3d shapes. For example you can have an infinite number of prisms with ends that are triangular, quadrilateral, or in the shape of any polygon.
A triangular prism has three rectangular faces and two triangular faces.
A triangular pyramid has four triangular faces.