Question

PLZ HELP ASAP>>>>>>>Select all that apply. Which of these polygons is not formed by the cross-section created when a plane intersects a cube? Select all that are possible.

-square
-circle
-pentagon
-trapezoid
-triangle
-rectangle

Answer 1

Explanation:

circle, octagon

Answer 2

The correct answer is:

A circle.

Explanation:

Since a cube has no curved faces, a plane will not be able to intersect a cube in such a way to create a cross section with any curves. This eliminates circle.

A square is created when a cube is intersected by a plane parallel to its base.
A pentagon is created when a cube is intersected by a plane in all but 1 face.
A trapezoid is created when a cube is intersected by a plane in 2 pairs of opposite faces, at an angle.
A triangle is created when a cube is intersected by a plane in 3 adjacent faces.
A rectangle is created when a cube is intersected by a plane in 2 pairs of opposite faces.