A REGULAR SQUARE PYRAMID.
A triangular prism.
No. All corresponding sides and angles have to be congruent for the triangles to be congruent.
A square pyramid has a square base and four congruent triangular faces.
A pyramid has one polygonal base and the rest of the faces are triangles. A prism has two congruent polygonal bases and the other faces are rectangles.
YesA triangular pyramid is a pyramid having a triangular base. The tetrahedron is a triangular pyramid having congruent equilateral triangles for each of its faces.
the difference between a pyramid and prism (in geometry) is that a pyramid has one base and lateral faces that are triangles where prisms have two congruent bases and lateral faces that are parallelograms
A triangular pyramid is a pyramid having a triangular base. The tetrahedron is a triangular pyramid having congruent equilateral triangles for each of its faces.
There is a contradiction in your question. If the base has four equal sides then is it a square so not all the faces are Triangles. However if the base is a square and the rest of the faces are triangles then your object is a "Square-based Pyramid"
A base
Yes, take a pyramid for example. Four of the five faces are triangles, while the base is square.
A Base. * * * * * What? Every prism, by definition, has two congruent faces which may be called the bases of the prism.
No. Usually the base is not.