 Hello and welcome to the session. Today I will help you with the following question. The question says, can a polyhedron have for its faces three triangles? A polyhedron is a solid made up of polygonal region's faces. This is the key idea to be used in this question. Now let's move on to the solution. We already know that the smallest polygon is a three sided figure that is triangle. Let's analyze this figure. As you can see that this is a polyhedron with three triangles as its faces and the base is also a triangle which forms another face. So we have that there should be at least four faces of the polyhedron. Hence there will be at least four faces of the polyhedron. A polyhedron cannot have for its faces three triangles. Hence our answer is no. So hope you enjoyed the session. Have a good day.