Cone
That sounds like a cone. One surface is a circle and the other surface is curved.
the enclosing boundary of a curved geometric figure, esp. a circle. the distance around a circle
A riddle is: I am a polyhedron I have two surfaces one of my surfaces is formed by a circle the other face is curved what am I?
One dimensional objects are lines, straight or curved. For example a line segment, a circle, a parabola, an ellipsis etc...
a coneType your answer here...
a cone...
Cone
That sounds like a cone. One surface is a circle and the other surface is curved.
I may be the upper or lower half of any oblate or prolate spheroid.You'll never know.bwahahaha
the enclosing boundary of a curved geometric figure, esp. a circle. the distance around a circle
semi-circle
A cone.
A cross section of an ellipsoid or sphere. A cone. A [right] truncated paraboloid (like the reflector of a car headlight). There are several others.
There seem to be lots of answers to this question, all saying cone.What about the poor lonely sphere? Split it in two by anyintersection with a plane and each piece will fit the question.
A riddle is: I am a polyhedron I have two surfaces one of my surfaces is formed by a circle the other face is curved what am I?
a hexagonal prism has 0 curved surfaces