Q: Is it true or false a right circular cone can have triangle as a base?

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no

false

A triangle is 2D, and has a square base. A cone is 3D, and has a circular base.

False because the longest side of a right angle triangle is its hypotenuse which is opposite to its largest angle of 90 degrees.

false

Related questions

no

false

Cones have a circular base and a triangle prism has a triangular base

that would be a cone.

False

A triangle is 2D, and has a square base. A cone is 3D, and has a circular base.

False because the longest side of a right angle triangle is its hypotenuse which is opposite to its largest angle of 90 degrees.

Strictly, if it has a circular base, it is a circular cylinder. Otherwise, it could have an oval base. If the long axis is at right angles (perpendicular) to the plane of the base, then it is a right circular cylinder.

A bicone is a three-dimensional shape swept by revolving an isosceles triangle around its base of unequal length, or by joining two identical right circular cones, base to base.

false

false

A right circular cone is perfectly balanced on its circular base. Imagine a cone that has a circular base, but leans to one side - this is a non right circular cone.