 Welcome to the session. Today I will help you with the following question. The question says, can a polyhedron have for its faces 4 triangles? First let's see what a polyhedron is. A polyhedron is a solid made up of polygonal regions called its faces. This is used as the key idea in this question. Let's move on to the solution. We already know that the smallest polygon is a three sided figure that is triangle. Let's have a look at this figure. This figure is a polyhedron as its faces are the polygonal regions. Now in this figure there are three faces and these are triangles and the fourth face is the base and that is also a triangle. So we say that a polyhedron can have for its faces 4 triangles. Our final answer is yes. So hope you enjoyed the session. Have a good day.