Question

Can a polygon have for its faces:
(i) 3 triangles (ii) 4 triangles (iii) a square and four triangles

Answer 1

(i) No, a polyhedron cannot have 3 triangles for its faces.
(ii) Yes, a polyhedron can have four triangles which is known as pyramid on triangular base.
(iii) Yes, a polyhedron has its faces a square and four triangles which makes a pyramid on square base.