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An illustration of a prismatoid with circular base.

Geometric Solid with Circular Base

An illustration of a prismatoid with circular base.

Illustration of an irregular concave heptagon.

Irregular Concave Heptagon

Illustration of an irregular concave heptagon.

Illustration of an irregular convex heptagon. This polygon has some symmetry.

Irregular Convex Heptagon

Illustration of an irregular convex heptagon. This polygon has some symmetry.

Illustration of an irregular convex heptagon. This polygon has some symmetry.

Irregular Convex Heptagon

Illustration of an irregular convex heptagon. This polygon has some symmetry.

Illustration of an irregular convex heptagon. This polygon has some symmetry.

Irregular Convex Heptagon

Illustration of an irregular convex heptagon. This polygon has some symmetry.

Illustration of an irregular convex heptagon. This polygon has some symmetry.

Irregular Convex Heptagon

Illustration of an irregular convex heptagon. This polygon has some symmetry.

Illustration of an irregular convex heptagon.

Irregular Convex Heptagon

Illustration of an irregular convex heptagon.

Illustration of a concave equilateral hexagon.

Concave Equilateral Hexagon

Illustration of a concave equilateral hexagon.

Illustration of a cyclic hexagon, a hexagon inscribed in a circle. This can also be described as a circle circumscribed about a hexagon. In this illustration, the hexagon is not regular (the lengths of the sides are not equal).

Cyclic Hexagon

Illustration of a cyclic hexagon, a hexagon inscribed in a circle. This can also be described as a circle…

Illustration of a cyclic hexagon, a hexagon inscribed in a circle. This can also be described as a circle circumscribed about a hexagon. In this illustration, the hexagon is not regular (the lengths of the sides are not equal).

Cyclic Hexagon

Illustration of a cyclic hexagon, a hexagon inscribed in a circle. This can also be described as a circle…

Illustration of an irregular hexagon. This is also an example of a concave polygon.

Irregular Concave Hexagon

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.

Irregular Concave Hexagon

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.

Irregular Concave Hexagon

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.

Irregular Concave Hexagon

Illustration of an irregular hexagon. This is also an example of a concave polygon with symmetry.

Illustration of an irregular convex hexagon.

Irregular Convex Hexagon

Illustration of an irregular convex hexagon.

Illustration of an irregular convex hexagon with symmetry.

Irregular Convex Hexagon

Illustration of an irregular convex hexagon with symmetry.

Illustration of a regular hexagon with each side divided into thirds by line segments extended to the opposite side.

Regular Hexagon With Segments

Illustration of a regular hexagon with each side divided into thirds by line segments extended to the…

Illustration of 2 regular concentric hexagons.

2 Concentric Hexagons

Illustration of 2 regular concentric hexagons.

Illustration of 2 regular concentric hexagons.

2 Concentric Hexagons

Illustration of 2 regular concentric hexagons.

Illustration of 2 regular concentric hexagons with 6 congruent circles placed between the hexagons so that they are tangent to each other and both the inner and outer hexagons.

2 Concentric Hexagons With Tangent Circles

Illustration of 2 regular concentric hexagons with 6 congruent circles placed between the hexagons so…

Illustration of 3 regular concentric hexagons that are equally spaced.

3 Concentric Hexagons

Illustration of 3 regular concentric hexagons that are equally spaced.

Illustration of 4 regular concentric hexagons that are equally spaced.

4 Concentric Hexagons

Illustration of 4 regular concentric hexagons that are equally spaced.

Illustration of a nonregular/irregular convcave nonagon. A nonagon is a closed geometric figure with 9 sides.

Irregular Concave Nonagon

Illustration of a nonregular/irregular convcave nonagon. A nonagon is a closed geometric figure with…

Illustration of a nonregular/irregular convcave nonagon. A nonagon is a closed geometric figure with 9 sides.

Irregular Concave Nonagon

Illustration of a nonregular/irregular convcave nonagon. A nonagon is a closed geometric figure with…

Illustration of a nonregular/irregular convcave nonagon. A nonagon is a closed geometric figure with 9 sides.

Irregular Concave Nonagon

Illustration of a nonregular/irregular convcave nonagon. A nonagon is a closed geometric figure with…

Illustration of a nonregular/irregular convex nonagon. A nonagon is a closed geometric figure with 9 sides.

Irregular Convex Nonagon

Illustration of a nonregular/irregular convex nonagon. A nonagon is a closed geometric figure with 9…

Illustration of a nonregular/irregular convex nonagon. A nonagon is a closed geometric figure with 9 sides.

Irregular Convex Nonagon

Illustration of a nonregular/irregular convex nonagon. A nonagon is a closed geometric figure with 9…

Illustration of a regular nonagon. A nonagon is a closed geometric figure with 9 sides. A regular nonagon has 9 equal sides and 9 equal angles.

Regular Nonagon

Illustration of a regular nonagon. A nonagon is a closed geometric figure with 9 sides. A regular nonagon…

Illustration of 2 regular concentric nonagons.

2 Concentric Nonagons

Illustration of 2 regular concentric nonagons.

Illustration of 2 regular concentric nonagons.

2 Concentric Nonagons

Illustration of 2 regular concentric nonagons.

Illustration of 2 regular congruent nonagons that have the same center. One nonagon has been rotated 20° in relation to the other.

2 Congruent Rotated Nonagons

Illustration of 2 regular congruent nonagons that have the same center. One nonagon has been rotated…

Illustration of 3 regular concentric nonagons that are equally spaced.

3 Concentric Nonagons

Illustration of 3 regular concentric nonagons that are equally spaced.

Illustration of 4 regular concentric nonagons that are equally spaced.

4 Concentric Nonagons

Illustration of 4 regular concentric nonagons that are equally spaced.

Illustration of a regular octagon circumscribed about a square. This could also be described as a square inscribed in a regular octagon.

Octagon Circumscribed About a Square

Illustration of a regular octagon circumscribed about a square. This could also be described as a square…

Illustration of a concave equilateral octagon.

Concave Equilateral Octagon

Illustration of a concave equilateral octagon.

Illustration of an irregular concave octagon. This polygon has some symmetry.

Irregular Concave Octagon

Illustration of an irregular concave octagon. This polygon has some symmetry.

Illustration of an irregular concave octagon.

Irregular Concave Octagon

Illustration of an irregular concave octagon.

Illustration of an irregular concave octagon. This polygon has some symmetry.

Irregular Concave Octagon

Illustration of an irregular concave octagon. This polygon has some symmetry.

Illustration of an irregular concave octagon. This polygon has some symmetry.

Irregular Concave Octagon

Illustration of an irregular concave octagon. This polygon has some symmetry.

Illustration of an irregular convex octagon. This polygon has some symmetry.

Irregular Convex Octagon

Illustration of an irregular convex octagon. This polygon has some symmetry.

Illustration of an irregular convex octagon. This polygon has some symmetry.

Irregular Convex Octagon

Illustration of an irregular convex octagon. This polygon has some symmetry.

Illustration of an irregular convex octagon.

Irregular Convex Octagon

Illustration of an irregular convex octagon.

Illustration of an irregular convex octagon. This polygon has some symmetry.

Irregular Convex Octagon

Illustration of an irregular convex octagon. This polygon has some symmetry.

Illustration of an irregular convex octagon. This polygon has some symmetry.

Irregular Convex Octagon

Illustration of an irregular convex octagon. This polygon has some symmetry.

Illustration of 2 regular concentric octagons.

2 Concentric Octagons

Illustration of 2 regular concentric octagons.

Illustration of 2 regular concentric octagons.

2 Concentric Octagons

Illustration of 2 regular concentric octagons.

Illustration of 3 regular concentric octagons that are equally spaced.

3 Concentric Octagons

Illustration of 3 regular concentric octagons that are equally spaced.

Illustration of 4 regular concentric octagons that are equally spaced.

4 Concentric Octagons

Illustration of 4 regular concentric octagons that are equally spaced.

Illustration of a cyclic pentagon, a pentagon inscribed in a circle. This can also be described as a circle circumscribed about a pentagon. In this illustration, the pentagon is not regular (the lengths of the sides are not equal).

Cyclic Pentagon

Illustration of a cyclic pentagon, a pentagon inscribed in a circle. This can also be described as a…

Illustration of an irregular pentagon. This is also an example of a concave polygon with symmetry.

Irregular Concave Pentagon

Illustration of an irregular pentagon. This is also an example of a concave polygon with symmetry.

Illustration of an irregular concave pentagon.

Irregular Concave Pentagon

Illustration of an irregular concave pentagon.

Illustration of an irregular pentagon. This is also an example of a convex polygon with symmetry.

Irregular Convex Pentagon

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 convex polygon with symmetry.

Irregular Convex Pentagon

Illustration of an irregular pentagon. This is also an example of a convex polygon with symmetry.

Illustration of an irregular convex pentagon.

Irregular Convex Pentagon

Illustration of an irregular convex pentagon.

Illustration of crossed polygon. This is not generally considered to be a real polygon.

Crossed Polygon

Illustration of crossed polygon. This is not generally considered to be a real polygon.

Illustration of crossed polygon. This is not generally considered to be a real polygon.

Crossed Polygon

Illustration of crossed polygon. This is not generally considered to be a real polygon.

Illustration of crossed polygon. This is not generally considered to be a real polygon.

Crossed Polygon

Illustration of crossed polygon. This is not generally considered to be a real polygon.

Illustration of crossed polygon. This is not generally considered to be a real polygon.

Crossed Polygon

Illustration of crossed polygon. This is not generally considered to be a real polygon.

Illustration of an irregular convex polygon with 16 sides that has symmetry. It could be used to show rotation of a square.

Irregular Convex Polygon

Illustration of an irregular convex polygon with 16 sides that has symmetry. It could be used to show…

An illustration of a prismatoid with 2 circular bases.

Prismatoid With 2 Circular Bases

An illustration of a prismatoid with 2 circular bases.