Answered

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Pre-Test
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Which of the following has a circular cross section when the cross section is taken parallel to the base?
A. cone
B. dodecahedron
C. rectangular prism
D. octahedron
Please select the best answer from the choices provided
A
B
TIME REMAININ
54:26

Sagot :

GinnyAnswer
To determine which shape has a circular cross-section when the cross section is taken parallel to the base, let's analyze each option:

A. Cone - A cone has a circular base. If you take a cross-section parallel to this base at any height, you will indeed get a circle.

B. Dodecahedron - A dodecahedron is a polyhedron with twelve flat faces, each a regular pentagon. No cross-section of a dodecahedron will yield a circular shape since the sides are all polygons, and there are no curved surfaces.

C. Rectangular Prism - A rectangular prism has rectangular faces. If you take a cross-section parallel to its base, you will always end up with another rectangle, not a circle.

D. Octahedron - An octahedron is a polyhedron with eight equilateral triangle faces. Similar to the dodecahedron, it does not have any curved surfaces, so no cross-section will result in a circle.

Given these descriptions, the shape that has a circular cross-section when taken parallel to the base is:
A. cone

Thus, the best answer is:
A
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