Question

Which of the following shapes can be formed by the lateral faces of a square pyramid?

• A. Only Isosceles Triangle
• B. Only Equilateral Triangle
• C. Isosceles or Equilateral Triangle
• D. None of the above

Answer 1

The correct option is C

Isosceles or Equilateral Triangle

The above diagram shows the lateral edge and the base edge of the square pyramid.
If the length of the lateral edge equals the base edge then it will be an equilateral triangle, otherwise it will be an isosceles triangle.