Which is the three-dimensional figure formed by rotating a triangle?a)...
Rotating a Triangle
To understand which three-dimensional figure is formed by rotating a triangle, we need to consider the different possibilities.
A) Cone:
A cone is formed by rotating a right triangle around one of its legs. However, in this question, we are not given any specific information about the triangle being a right triangle or being rotated around one of its legs. Therefore, we can eliminate the option of a cone.
B) Quadrilateral:
A quadrilateral is a four-sided polygon, and rotating a triangle will not result in a quadrilateral. The rotation will either create a cone, a prism, or a square, so we can eliminate the option of a quadrilateral.
C) Prism:
A prism is formed by extending a polygon in one direction and then rotating it around that extension. In this case, if we rotate a triangle around one of its sides, we will not obtain a prism. Therefore, we can eliminate the option of a prism.
D) Square:
A square is a four-sided polygon with equal sides and right angles. When a triangle is rotated around one of its sides, the resulting figure will be a three-dimensional shape that has a circular base and a pointed top, like a cone. Therefore, the correct answer is option 'A' - Cone.
Conclusion:
When a triangle is rotated, the resulting figure will resemble a cone. Therefore, the answer to this question is option 'A' - Cone.
Which is the three-dimensional figure formed by rotating a triangle?a)...
A) cone
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