A triangle has 3 sides.
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If you mean what shape has 3 sides, it's a triangle.
A triangle is a shape that has 3 sides and 3 corners. It is a three-sided polygon, which is a plane shape bounded by three straight lines.
A shape with three sides is called a triangle. A shape with ten sides is called a decagon.
Triangle is a shape with three sides.
i have algebra and all it means is a shape with 3 sides...and 3 vertices! just like 2nd grade!