 ### Prismatoid With 2 Circular Bases

An illustration of a prismatoid with 2 circular bases. ### Prismatoid With Circular Base

An illustration of a prismatoid with circular base. An illustration of a prismatoid with faces that are quadrilaterals. ### Prismatoid With Triangular Faces

An illustration of a prismatoid with triangular faces and points labeled. Illustration of a cyclic quadrilateral, a quadrilateral inscribed in a circle. This can also be described… ### Divided Rectangle

A rectangle divided evenly by a dotted line. ### Regular Heptagon/Septagon Circumscribed about a Circle

Illustration of a regular heptagon/septagon circumscribed about a circle. This can also be described… ### 2 Concentric Septagons/Heptagons

Illustration of 2 regular concentric heptagons/septagons. ### 2 Concentric Septagons/Heptagons

Illustration of 2 regular concentric heptagons/septagons. ### 3 Concentric Septagons/Heptagons

Illustration of 3 regular concentric heptagons/septagons that are equally spaced. ### 4 Concentric Septagons/Heptagons

Illustration of 4 regular concentric heptagons/septagons that are equally spaced. ### Divided Square

A square divided evenly by a dotted line. ### Divided Square

A square divided evenly by a dotted line, known as the diagonal. Illustration of a stepladder that is opened to form an isosceles triangle with the ground.  