Question

A triangular pyramid is pictured below. Select the type of cross section formed when the figure is cut by a plane containing its altitude and perpendicular to its base.
Answer
Multiple Choice Answers
triangletriangle
circlecircle
rectanglerectangle
squaresquare

Answer 1

When a triangular pyramid (also known as a tetrahedron) is cut by a plane that contains its altitude and is perpendicular to its base, the resulting cross-section will be a triangle. This is because the cut will intersect the apex of the pyramid and the base, forming a triangular shape.

**Answer: triangle**