It is called a cone.
It is just called a "central angle".
a hemisphere is half of a sphere. It has 1 edge, 1 face and no vertex. lot of other thing have hemisphere in the name. Different halves of the earth is a hemisphere.
The solid shape you are describing is called a cone. A cone has a circular base and narrows to a single vertex, or apex, at the top. Its curved surface connects the base to the vertex, distinguishing it from other solid shapes.
A Sphere is an the name for a shape of a 3D object that is like a ball or a globe. If the shape is 2D then it is a circle
There are many such shapes. A circle is perhaps the most obvious.
cylinder??nope
a vertex
A central angle.
It is just called a "central angle".
It is a vertex. But you may be thinking of an apex.
I think this means, what is the plural of vertex?? If so, then the answer - vertices. My daughter and I searched for ages thinking the question was looking for the name of a 3d shape!!
a hemisphere is half of a sphere. It has 1 edge, 1 face and no vertex. lot of other thing have hemisphere in the name. Different halves of the earth is a hemisphere.
Vertex.
The corner on a shape where edges meet is called a vertex.
That would usually be referred to as a vertex.
The solid shape you are describing is called a cone. A cone has a circular base and narrows to a single vertex, or apex, at the top. Its curved surface connects the base to the vertex, distinguishing it from other solid shapes.
hemisphere