Solids of Revolution

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

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Describe the cross section.

• circle

• oval

• semi-circle

• trapezoid

Describe the cross section.

• triangle

• rectangle

• oval

• trapezoid

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

• Dome

• Circle

• Ellipse

• Rectangle

Circle O is centered at the origin. In the diagram below, a quarter of circle O is graphed. Which three-dimensional figure is generated when the quarter circle is continuously rotated about the y-axis?

• cone

• sphere

• cylinder

• hemisphere

• crescent

Select the 2D object that can be rotated to form the 3D object shown.

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Select ALL of the 2D objects that when rotated will create the 3D object.

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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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What geometric figure is formed?

Submit 1 word (small letters)

Triangle is rotated @ x-axis

What geometric figure is formed?

Submit 1 word (small letters)