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A cone will form when a triangle is dilated using one of the vertices as the center of dilation. A cone has a circular base that tapers smoothly into a vertex called the apex. 

When a Triangle is Dilated taking one of the vertices as the center of dilation

There are two Possibility, either Dilation factor will be (0<Dilation factor<1), or greater than 1.

 1. When,0< Dilation Factor < 1

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2. When Dilation Factor > 1

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