Question

Which of the following has no rectangular faces?

• A. A triangular pyramid
• B. A triangular prism
• C. A square prism
• D. A cube

Answer 1

The correct option is A A triangular pyramid

A triangular prism has $3$ rectangular faces and $2$ triangular faces.

A square prism is a three dimensional shape with six rectangular shaped sides, at least two of which are squares.Square has all faces rectangular.

All faces of a cube are square and squares has all faces rectangular.

But, a triangular pyramid has four faces and all four faces are triangular.

Hence, triangular pyramid has no rectangular faces.