It is a section formed by a plane at right angles to the axis of the cone.
it a cone cut in half from the top
You have a 3-d shape. If you slice of a part of it with a very very sharp instrument (a sharp sword or a laser, for example) the cross section is the shape of the newly cut surface. So, if you start with a sphere, any section will be a circle. Of different sizes depending on how high or low you cut, but they'll all be circles. If you have a cone, a dead vertical cut, through its apex (top point) will be a triangle. But as you move off the apex, you will get a parabola. Cut is horizontally, though, and you will get circles - ncreasing in size as you move further from the apex. Cut it at a slight slant and you will get ellipses (ovals). And so on.
A cylinder, a doughnut with a slice cut out by radial planes, a sphere with two slices removed (possibly in a wedge shape), a cone with its top and bottom cut off by horizontal planes, a paraboloid with top and bottom cut off by horizontal planes.
It is the section of a cone between two parallel planes that are perpendicular to the axis of the cone. In simpler terms, it is what is left of a solid cone when the pointed end is cut off.
It depends how the cone was standing relative to the horizontal plane of the cut:It will result in:a circle (if the cone is with its circular base in a horizontal plane)a parabola (if the cone is with its circular base is in a vertical plane)an ellipse (if the cone is tilted with its circular base somewhere between a horizontal plane and a vertical plane).
It is a section formed by a plane at right angles to the axis of the cone.
When a sphere is cut into cross sections, the shape formed is a circle. This is because all cross sections of a sphere will be circular in shape, regardless of the angle or position of the cut.
This shape is known as a Conical Frustum. Please see the related link.
When a cone is sliced parallel to the base then the shape produced is a circle. If the cone is sliced at an angle so that the cut goes completely through the cone then an ellipse is produced. If the cut is made perpendicular to the cone's base then the shape produced is a parabola.
it a cone cut in half from the top
A truncated cone is basically a cone with it's tip cut off.
There is no frustum of a cone. There is a frustum, which is a cone with the top cut off parallel to the ground.
You have a 3-d shape. If you slice of a part of it with a very very sharp instrument (a sharp sword or a laser, for example) the cross section is the shape of the newly cut surface. So, if you start with a sphere, any section will be a circle. Of different sizes depending on how high or low you cut, but they'll all be circles. If you have a cone, a dead vertical cut, through its apex (top point) will be a triangle. But as you move off the apex, you will get a parabola. Cut is horizontally, though, and you will get circles - ncreasing in size as you move further from the apex. Cut it at a slight slant and you will get ellipses (ovals). And so on.
A cylinder, a doughnut with a slice cut out by radial planes, a sphere with two slices removed (possibly in a wedge shape), a cone with its top and bottom cut off by horizontal planes, a paraboloid with top and bottom cut off by horizontal planes.
To create a conical shape from a steel plate, you can use a template or layout tool to mark the specific dimensions and angle needed for the cone. Start by marking the center point of the plate and then create a circle with a radius equal to the desired base of the cone. From this circle, mark radial lines at the desired angle to form the cone's shape. Cut along the marked lines and then weld or fasten the edges together to form the cone.
A cylinder, a doughnut with a slice cut out by radial planes, a sphere with two slices removed (possibly in a wedge shape), a cone with its top and bottom cut off by horizontal planes, a paraboloid with top and bottom cut off by horizontal planes.