Illustration of pentagon inscribed in circle. Or, circle circumscribed about pentagon.

Illustration of a regular pentagon circumscribed about a circle. This can also be described as a circle…

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

Illustration of regular hexagon and triangle inscribed in circle.

Illustration used to show how to inscribe a regular pentagon in a given circle.

Regular pentagon inscribed in a circle, circumscribed about a circle.

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

Illustration of pentagon inscribed in circle. Or, circle circumscribed about pentagon. Construction…

"An involute is a curve generated by unwrapping an inflexible chord from around a polygon. Thus the…

Illustration showing a circle inscribed in a regular pentagon. Or, a regular pentagon circumscribed…

Illustration that shows similar polygons (pentagons) that can be used to show proportionality.

Illustration that shows similar polygons (pentagons) that can be used to show proportionality.

Illustration of a skewed pentagonal prism. The prism is non-right. The hidden edges are shown.

Illustration of a skewed pentagonal prism. The prism is non-right. The hidden edges are shown.

Illustration of a pentagon with sides measuring 6 2/3', 4 1/2', 5 1/3', 4 3/4', and 9 5/12'.

Outlines of shapes (quadrilateral, hexagon, arrow, pentagon) made from tangram pieces. Tangrams, invented…

Solutions for outlines of shapes (quadrilateral, hexagon, arrow, pentagon) made from tangram pieces.…

Silhouette outlines of shapes (quadrilateral, hexagon, arrow, pentagon) made from tangram pieces. Tangrams,…

Solutions for silhouette outlines of shapes (quadrilateral, hexagon, arrow, pentagon) made from tangram…