This may be shown by a net of the prism. Image caption, First work out the area of the triangular faces. The area of a triangle is ½ × base × height. There are two congruent (identical ...

the prism is called a triangular prism. When the cross-section is a hexagon, the prism is called a hexagonal prism. Image caption, The faces of a prism are the congruent polygon ‘ends’, plus ...