Illustration of the method of finding the projection, in the form of an ellipse, of the top of a cylinder…
Illustration of the intersection of a square pyramid and a plane.
Illustration of the intersection of a triangular pyramid and a plane.
Illustration of the intersection of a square pyramid and a plane.
Illustration of the intersection of a hexagonal pyramid and a plane.
Illustration of a frustum of a hexagonal pyramid (including cross-section).
Illustration of a frustum of a pentagonal pyramid (including cross-section).
Illustration of an irregular hexagon. This is also an example of a concave polygon.
Illustration of an irregular hexagon. This is also an example of a concave polygon with symmetry.
Illustration of an irregular hexagon. This is also an example of a concave polygon with symmetry.
Illustration of an irregular hexagon. This is also an example of a concave polygon with symmetry.
Illustration of crossed polygon. This is not generally considered to be a real polygon.
Illustration of an irregular pentagon. This is also an example of a convex polygon with symmetry.
Illustration of an irregular pentagon. This is also an example of a concave polygon with symmetry.
Illustration of an irregular pentagon. This is also an example of a convex polygon with symmetry.
Illustration of crossed polygon. This is not generally considered to be a real polygon.
Illustration of an irregular convex heptagon. This polygon has some symmetry.
Illustration of an irregular convex heptagon. This polygon has some symmetry.
Illustration of crossed polygon. This is not generally considered to be a real polygon.
Illustration of an irregular convex heptagon. This polygon has some symmetry.
Illustration of an irregular convex heptagon. This polygon has some symmetry.
Illustration of an irregular convex octagon. This polygon has some symmetry.
Illustration of an irregular convex octagon. This polygon has some symmetry.
Illustration of an irregular concave octagon. This polygon has some symmetry.
Illustration of crossed polygon. This is not generally considered to be a real polygon.
Illustration of an irregular convex octagon. This polygon has some symmetry.
Illustration of an irregular convex polygon with 16 sides that has symmetry. It could be used to show…
Illustration of an irregular convex octagon. This polygon has some symmetry.
Illustration of an irregular concave octagon. This polygon has some symmetry.
Illustration of an irregular concave octagon. This polygon has some symmetry.
Illustration of an irregular convex decagon. This polygon has some symmetry.
Illustration of an irregular convex decagon. This polygon has some symmetry.
Illustration of an irregular convex decagon. This polygon has some symmetry.
Illustration of an irregular convex decagon. This polygon has some symmetry.
Illustration of an irregular convex decagon. This polygon has some symmetry.
Illustration of an irregular convex dodecagon. This polygon has some symmetry.
Illustration of an irregular convex dodecagon. This polygon has some symmetry.
Illustration of an irregular convex dodecagon. This polygon has some symmetry.
Illustration of 4 congruent tangent right circular cylinders. The height of all the cylinders is greater…
Illustration of 3 right congruent tangent circular cylinders. The height of all the cylinders is greater…
Illustration of 3 right congruent tangent circular cylinders.
Illustration of 3 right congruent tangent circular cylinders. The height of all the cylinders is greater…