It is called a frustrum
Yes if cut in half from its apex to its base diameter.
A cylinder and a cone have infinitely many planes of symmetry because of the circular face. However, a cylinder can also be cut in half lengthwise (imaging cutting a soda can in half), while a cone cannot (imagine cutting a ice cream cone in half). Therefore, a cylinder has one more plane of symmetry than a cone.
hemisphere
If a cone is cut diagonally, the resulting shape will be a frustum of a cone if the cut is parallel to the base, or a more complex shape resembling a triangular prism if the cut is made at an angle that intersects the cone's sides. The frustum retains the circular top and bottom surfaces, while the triangular prism shape will have triangular cross-sections along its height. The exact shape depends on the angle and position of the cut.
Depends on the way you cut the cone, but the outline is either an ellipse or a parabola.
it a cone cut in half from the top
It is called a frustum.
Yes if cut in half from its apex to its base diameter.
A cylinder and a cone have infinitely many planes of symmetry because of the circular face. However, a cylinder can also be cut in half lengthwise (imaging cutting a soda can in half), while a cone cannot (imagine cutting a ice cream cone in half). Therefore, a cylinder has one more plane of symmetry than a cone.
To cut something in half is called "halving." This involves dividing an object or quantity into two equal parts.
hemisphere
A truncated cone is basically a cone with it's tip cut off.
You simply calculate it like a cone, but the height of the cone is the height to the top of the FILLED part, not all the way. Half-filled is not enough information . . . there can be "half filled" meaning half the height of the cone, but can also be "half filled" meaning half the volume of the cone.
There is no frustum of a cone. There is a frustum, which is a cone with the top cut off parallel to the ground.
Whats a diagram
It becomes an hemisphere
It is called symmetry. When an object is cut in half and both sides are identical, it exhibits symmetry.