Illustration of a right circular cone that has been cut by a plane parallel to the base. The lower part…
Illustration of a right circular cone that has been cut by a plane parallel to the base. The top section…
A rolled out image of a cone by dividing the base in equal parts and arcs to measure the true lengths.
Illustration of a frustum of a right circular cone with hidden edges shown. When a cone is cut by a…
Illustration of a frustum of a right circular cone. When a cone is cut by a plane parallel to the base,…
Possible forms of the invariable cone by means of the intersections with a concentric spherical surface.
Illustration of a right circular cone with the diameter of the base equal to the height of the cone.
Illustration of a right circular cone with the diameter of the base greater than the height of the cone.
Illustration of a right circular cone resting on an element such that the vertex is on the bottom and…
The lines which join corresponding points in an involution on a conic all pass through a fixed point;…
The cone is sliced by a circle in a plane perpendicular to the axis. This can be drawn without knowledge…
The cone is sliced by a ellipse by making an angle within the plane. This can be drawn with knowing…
The cone is sliced by a hyperbola within a plane. The angle of the hyperbola will make a smaller angle…
The illustration shows the cylinder rolled out in a tangent plane of the base to create a development…
An illustration of a hexagonal prism rolled out, or "stretched out" in the straight line AB.
An image of a hexagonal pyramid stretched out. The length of the edges are equal plane, and intersects…
The lines joining any point on a conic to the two foci are equally inclined to the tangent and normal…
"An oblique cone connecting two parallel pipes of different diameters... the true size of the base is…
A development or rolled out oblique cone using triangulation. The method of triangulation is done by…
A stretched out image of the octagonal dome by using projection or with dividers to create a five-piece…
The segments between the point of intersection of two tangents to a conic and their points of contact…
The illustration of a rectangular pyramid unfolded by creating edges equal length to the base and meeting…
An illustration in flattening the sphere using Gore method by creating cylinder sections with equal…
An illustration of a development of sphere using Zone method by creating sections of rolled out cones.
Illustration showing the development of a sphere by the perspective of its resolved cones.