Three Dimensional Cross Sections

The cross section of a regular pyramid contains the altitude of the pyramid. The shape of this cross section is a

• circle

• square

• triangle

• rectangle

A plane intersects a hexagonal prism. The plane is perpendicular to the base of the prism. Which two-dimensional figure is the cross section of the plane intersecting the prism?

• triangle

• trapezoid

• hexagon

• rectangle

A two-dimensional cross section is taken of a three-dimensional object. If this cross section is a triangle, what can not be the three-dimensional object?

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William is drawing pictures of cross sections of the right circular cone above.

Which drawing can not be a cross section of a cone?

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What shape will the horizontal cross-section of a sphere be?

• Dome

• Circle

• Ellipse

• Rectangle

What shape will the vertical cross-section of a cube be?

• Square

• Triangle

• Trapezoid

• Circle

What shape will the vertical cross -section of a cylinder be?

• Circle

• Triangle

• Rectangle

• Ellipse

Describe the cross section.

• circle

• oval

• semi-circle

• trapezoid

What cross sections might you see when a plane intersects a cone that you would not see when a plane intersects a pyramid or a prism?

• circle

• trapezoid

• rectangle

• trapezoid

What 3-D solid is formed when this rectangle is rotated about the vertical line?

• Right, rectangular prism

• Right, circular cylinder

• Right, oval cylinder

• Right, square prism