What is the shape of the cross-section formed when a cone intersects a plane as shown in the drawing?A.ovalB.squareC.triangleD.circle
Question
What is the shape of the cross-section formed when a cone intersects a plane as shown in the drawing?
A. oval
B. square
C. triangle
D. circle
Solution
To determine the shape of the cross-section formed when a cone intersects a plane, we can analyze the possible scenarios based on the angle and position of the intersecting plane relative to the cone.
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Understanding the Cone: A cone has a pointed vertex and a circular base. When a plane cuts through a cone, the shape of the cross-section depends on how the plane intersects the cone.
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Possible Scenarios:
- If the plane cuts parallel to the base of the cone, the resulting cross-section is a circle.
- If the plane intersects the cone at an angle that is not parallel to the base but does not go all the way through the cone, the result can be an ellipse (which is a more general term including the circle).
- If the plane cuts through the apex of the cone in a straight manner (like slicing diagonally), the cross-section can be a triangle.
- If the cone is cut by a plane in a manner parallel to the height of the cone, the resulting cross-section could also theoretically form a square, though this is less common and generally requires specific conditions.
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Conclusion: Since the question does not specify any extraordinary conditions of the intersection, we can summarize the most common outputs:
- A cone intersected parallel to its base gives a circle.
- An intersection through the apex yields a triangle.
Given the options provided (A. oval, B. square, C. triangle, D. circle), the most straightforward and common shapes are:
- A. oval (which could relate to the elliptical cut)
- B. square (less common)
- C. triangle (if intersecting through the apex)
- D. circle (if intersecting parallel to the base)
Final Answer
The most likely shape for a cross-section formed when a cone intersects a plane is D. circle or C. triangle depending on the specifics of the intersection.
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