triangle
It will look like a cone-shaped party hat from the side and a bullseye from the top.
A right circular cone balanced on its apex.A right circular cone balanced on its apex.A right circular cone balanced on its apex.A right circular cone balanced on its apex.
The side of a cone is - not surprisingly - conical is shape. Its net is a sector of a circle.
The curved surface (or face) of the cone.
triangle
A triangle with a curved bottom.
A right circular cone could probably do that.
It will look like a cone-shaped party hat from the side and a bullseye from the top.
A right circular cone balanced on its apex.A right circular cone balanced on its apex.A right circular cone balanced on its apex.A right circular cone balanced on its apex.
Cinder cone volcanoes look kind of like a mound/donut shaped. from the side view, it looks like there's a donut hole at the top in the middle. From the top view, it looks basically like a donut from the top view. =)
The side of a cone is - not surprisingly - conical is shape. Its net is a sector of a circle.
parasite or secondary cone
The curved surface (or face) of the cone.
a parabola
A cone is a 3-dimensional shape, while drawing on a computer is generally limited to two dimensions, and projection of three dimensions onto a flat (two-dimensional) canvas. You can draw a cone very easily onto a 2-dimensional canvas if you are free to chose the viewing angle, and if that viewing angle does not need to change. You could draw a triangle and state that it shows a side view of the cone, you could draw a circle and state that it shows the bottom view of the cone, or you could draw a circle with the center point marked, and state that it shows the top view of the cone. You could draw all three, top, bottom and side view, and state it shows the cone in all three dimensions, in the way most 3-dimensional objects are shown in a technical drawing. For creating a projection of a 3-dimensional cone from an arbitrary viewing angle, you should consult dedicated (but non-trivial!) literature on 3-D rendering. Many languages also support 3D graphics toolkits such as OpenGL.
Tilt of cutting plane is between (perpendicular to axis of the cone) and (parallel to the side of the cone).