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saw5 [17]
3 years ago
8

The diagram shows a cone and its axis of rotation. If a plane passes through the axis of rotation, which type of cross section w

ill be formed?
A: a circle

B: an isosceles triangle

C: a parabola

D: an oval

Mathematics
2 answers:
Ksivusya [100]3 years ago
7 0
Isosceles triangle.

B
zaharov [31]3 years ago
6 0

Answer:  The answer is (B). An isosceles triangle.

Step-by-step explanation:  In the given figure, a cone and its axis of rotation is shown. We are to select the type of cross-section that will be formed if the plane passes through the axis of rotation.

See the attached figure, if a plane passes through the axis of rotation of the cone, then the resultant cross-section will be a triangle with one vertex as the vertex of the cone, i.e., A. And also, the two sides of the triangle through the vertex A will be equal.

The cross-section is also shown in the attached figure and it will be an isosceles triangle ABC, where AB = AC.

Thus, the correct option is  (B) an isosceles triangle.

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