Question

Which shapes can be made from a planar cross section of a triangular pyramid? More than one can be correct: trapezoid, pentagon, isosceles triangle, rectangle, hexagon, scalene triangle, square, decagon, or equilateral triangle

Answer 1

Triangle in isosceles, scalene or equilateral forms and

quadrilateral in trapezoid, rectangle or square forms

Explanation:

Refer to pictures attached

Shapes can be formed are:

• Trapezoid,

when perpendicular to base

• Rectangle or square,

when angle cross section to base

• Isosceles triangle,

when base is isosceles triangle and parallel cross section to base,

or angle cross section

• Scalene triangle,

when base is scalene triangle and parallel cross section to base,

or angle cross section

• Equilateral triangle,

when base is equilateral triangle and parallel cross section to base,

or angle cross section