Cross Sections and Rotating 2D Shapes

What is a cross-section?

• A three-dimensional shape formed by cutting a 2D figure

• A two-dimensional shape formed by cutting a 3D figure

• A method to calculate the volume of shapes

• A type of mathematical equation

What 3D figure is formed by rotating a square around the y-axis?

• Sphere

• Cylinder

• Cone

• Pyramid

What cross-section is formed when a cylinder is cut parallel to its base?

• Rectangle

• Triangle

• Circle

• Square

What cross-section is formed when a cylinder is cut vertically?

• Hexagon

• Triangle

• Rectangle

• Circle

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

• Dome

• Circle

• Ellipse

• Rectangle

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

• Dome

• Circle

• Ellipse

• Rectangle

Which 3 dimensional object would result from rotating the figure around the axis drawn?

• sphere

• triangular prism

• Cylinder

• cone

Select ALL of the following that can be created by rotating the following 2D object on any of the axes shown.

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Which 3D shape will be formed if the semi-circle is rotated around axis E?

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What would the cross section of this figure be?

• Circle

• Square

• Triangle

• Cone