### 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.

### Prismatoid With Quadrilateral Faces

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.