Which of the following has exactly four faces?
A. cone
B. square
C. triangular prism
D. triangular pyramid
idk hehe
To determine which of the given options has exactly four faces, we need to count the number of faces each shape has.
A. Cone: A cone has two faces - a circular base and a curved surface. Therefore, it does not have exactly four faces.
B. Square: A square has four equal sides and four equal angles. It also has four faces - one top face, one bottom face, and two side faces. Hence, a square has exactly four faces.
C. Triangular Prism: A triangular prism has two triangular bases and three rectangular side faces. Therefore, it has five faces, not exactly four.
D. Triangular Pyramid: A triangular pyramid has a triangular base and three triangular side faces. Including the base, it has a total of four faces. Therefore, a triangular pyramid has exactly four faces.
From the options provided, both the square and the triangular pyramid have exactly four faces.