It is false. If it has a triangle as its base it would be a pyramid.
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
no
false
Cones have a circular base and a triangle prism has a triangular base
False
that would be a cone.
A triangle is 2D, and has a square base. A cone is 3D, and has a circular base.
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.
False because the longest side of a right angle triangle is its hypotenuse which is opposite to its largest angle of 90 degrees.
false
false
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.
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.