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Illustration of a dodecagonal antiprism. An antiprism is formed by having two parallel congruent bases connected by an alternating band of triangles. The bases in this illustration are dodecagons.

Dodecagonal Antiprism

Illustration of a dodecagonal antiprism. An antiprism is formed by having two parallel congruent bases…

Illustration of a dodecagonal antiprism. An antiprism is formed by having two parallel congruent bases connected by an alternating band of triangles. The bases in this illustration are dodecagons.

Dodecagonal Antiprism

Illustration of a dodecagonal antiprism. An antiprism is formed by having two parallel congruent bases…

Illustration of a dodecagon circumscribed about a circle. This can also be described as a circle inscribed in a dodecagon.

Dodecagon Circumscribed About A Circle

Illustration of a dodecagon circumscribed about a circle. This can also be described as a circle inscribed…

Illustration of a dodecagon inscribed in a circle. This can also be described as a circle circumscribed about a dodecagon.

Dodecagon Inscribed In A Circle

Illustration of a dodecagon inscribed in a circle. This can also be described as a circle circumscribed…

"A polygon of...twelve sides is [a] dodecagon." —Hallock 1905

Dodecagon

"A polygon of...twelve sides is [a] dodecagon." —Hallock 1905

Illustration of a 12-point star (24-sided polygon) inscribed in a regular dodecagon. This can also be described as a regular dodecagon circumscribed about a 12-point star (24-sided polygon).

12-Point Star Inscribed In A Dodecagon

Illustration of a 12-point star (24-sided polygon) inscribed in a regular dodecagon. This can also be…

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

Irregular Convex Dodecagon

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

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

Irregular Convex Dodecagon

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

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

Irregular Convex Dodecagon

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

Illustration of 2 regular concentric dodecagons.

2 Concentric Dodecagons

Illustration of 2 regular concentric dodecagons.

Illustration of 2 regular concentric dodecagons.

2 Concentric Dodecagons

Illustration of 2 regular concentric dodecagons.

Illustration of 3 regular concentric dodecagons that are equally spaced.

3 Concentric Dodecagons

Illustration of 3 regular concentric dodecagons that are equally spaced.

Illustration of 4 regular concentric dodecagons that are equally spaced.

4 Concentric Dodecagons

Illustration of 4 regular concentric dodecagons that are equally spaced.

A flashcard featuring an illustration of a polygon with twelve equal sides

Flashcard of a polygon with twelve equal sides

A flashcard featuring an illustration of a polygon with twelve equal sides

Polygon consisting of 12 sides

12-sided Polygon

Polygon consisting of 12 sides

1/12 of a 12 sided polygon

Fractions of 12-sided Polygon

1/12 of a 12 sided polygon

2/12 of a 12 sided polygon

Fractions of 12-sided Polygon

2/12 of a 12 sided polygon

3/12 of a 12 sided polygon

Fractions of 12-sided Polygon

3/12 of a 12 sided polygon

4/12 of a 12 sided polygon

Fractions of 12-sided Polygon

4/12 of a 12 sided polygon

5/12 of a 12 sided polygon

Fractions of 12-sided Polygon

5/12 of a 12 sided polygon

6/12 of a 12 sided polygon

Fractions of 12-sided Polygon

6/12 of a 12 sided polygon

7/12 of a 12 sided polygon

Fractions of 12-sided Polygon

7/12 of a 12 sided polygon

8/12 of a 12 sided polygon

Fractions of 12-sided Polygon

8/12 of a 12 sided polygon

9/12 of a 12 sided polygon

Fractions of 12-sided Polygon

9/12 of a 12 sided polygon

10/12 of a 12 sided polygon

Fractions of 12-sided Polygon

10/12 of a 12 sided polygon

11/12 of a 12 sided polygon

Fractions of 12-sided Polygon

11/12 of a 12 sided polygon

12/12 of a 12 sided polygon

Fractions of 12-sided Polygon

12/12 of a 12 sided polygon

12/12 of a 12 sided polygon with one piece detached

Fractions of 12-sided Polygon

12/12 of a 12 sided polygon with one piece detached