### Circle Triangle Tangents

Six equal circles tangent to each other and to the sides of the triangle

### Circle With Triangles and Circle Within

Illustration showing a circle with equilateral triangles and another circle within.

### Nonagon Inscribed in a Circle

Illustration of a regular nonagon inscribed in a circle. This could also be described as a circle circumscribed…

### Concave Equilateral Decagon

A 5-point star made from a non-regular concave decagon in which all sides are equal in length.

### 2 Concentric Decagons

Illustration of 2 regular concentric decagons.

### 2 Concentric Decagons

Illustration of 2 regular concentric decagons.

### 3 Concentric Decagons

Illustration of 3 regular concentric decagons that are equally spaced.

### 4 Concentric Decagons

Illustration of 4 regular concentric evenly spaced decagons.

### 12 Triangles Inscribed In A Dodecagon

Illustration of 12 equilateral triangles inscribed in an equilateral dodecagon. Each vertex of the dodecagon…

### 3 Square Inscribed In A Dodecagon

Illustration of 3 squares inscribed in an regular dodecagon. Each vertex of the dodecagon is also a…

### Hexagon And Triangle Inscribed In A Dodecagon

Illustration of a regular hexagon and an equilateral triangle inscribed in a regular dodecagon. This…

### Hexagon Inscribed In A Dodecagon

Illustration of a regular hexagon inscribed in a regular dodecagon. This could also be described as…

### Square Circumscribed About A Dodecagon

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

### Square Inscribed In A Dodecagon

Illustration of a square inscribed in an regular dodecagon. This could also be described as a regular…

### Squares Inscribed and Circumscribed About a Regular Dodecagon

Illustration of 2 squares; one inscribed in a regular dodecagon and the other circumscribed about the…

### Triangle Inscribed In A Dodecagon

Illustration of an equilateral triangle inscribed in an equilateral dodecagon. This could also be described…

### 2 Concentric Dodecagons

Illustration of 2 regular concentric dodecagons.

### 2 Concentric Dodecagons

Illustration of 2 regular concentric dodecagons.

### 3 Concentric Dodecagons

Illustration of 3 regular concentric dodecagons that are equally spaced.

### 4 Concentric Dodecagons

Illustration of 4 regular concentric dodecagons that are equally spaced.

### Drawing House Forms

A, B, and C show three types of triangular prisms: right, isosceles, and equilateral. When put together…

### Equilateral

An equilateral triangle is one having all of its sides equal.

### Equilateral Arch

"Equilateral pointed arches, described from two centers, the radius being the whole width of the arch."…

### Centers of Equilateral Triangle

Illustration of an equilateral triangle that shows both the centroid (where the medians of the sides…

### 10 Congruent Rotated Equilateral Triangles

Illustration of 10 congruent equilateral triangles that have the same center. Each triangle has been…

### 10 Congruent Rotated Equilateral Triangles

Illustration of 10 congruent equilateral triangles that have the same center. Each triangle has been…

### 2 Concentric Equilateral Triangles

Illustration of 2 concentric equilateral triangles.

### 2 Concentric Equilateral Triangles

Illustration of 2 concentric equilateral triangles.

### 20 Congruent Rotated Equilateral Triangles

Illustration of 20 congruent equilateral triangles that have the same center. Each triangle has been…

### 3 Concentric Equilateral Triangles

Illustration of 3 concentric equilateral triangles that are equally spaced.

### 4 Concentric Equilateral Triangles

Illustration of 4 concentric equilateral triangles that are equally spaced.

### 5 Congruent Rotated Equilateral Triangles

Illustration of 5 congruent equilateral triangles that have the same center. Each triangle has been…

### Flashcard of a polygon with three equal sides

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

### Regular Hexagon

Regular hexagon with equilateral triangles divided in the interior.

### Regular Hexagon With Segments

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

### 2 Concentric Hexagons

Illustration of 2 regular concentric hexagons.

### 2 Concentric Hexagons

Illustration of 2 regular concentric hexagons.

### 2 Concentric Hexagons With Tangent Circles

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

### 3 Concentric Hexagons

Illustration of 3 regular concentric hexagons that are equally spaced.

### 4 Concentric Hexagons

Illustration of 4 regular concentric hexagons that are equally spaced.

### Lemniscate

A Lemniscate is, in general, a curve generated by a point moving so that the product of its distances…

### Circle Inscribed in a Nonagon

Illustration of a circle inscribed in a regular nonagon. This could also be described as a regular nonagon…

### Regular Nonagon

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

### Triangle Inscribed in a Nonagon

Illustration of an equilateral triangle inscribed in a regular nonagon. This could also be described…

### 2 Concentric Nonagons

Illustration of 2 regular concentric nonagons.

### 2 Concentric Nonagons

Illustration of 2 regular concentric nonagons.

### 3 Concentric Nonagons

Illustration of 3 regular concentric nonagons that are equally spaced.

### 4 Concentric Nonagons

Illustration of 4 regular concentric nonagons that are equally spaced.

### Octagon Circumscribed About a Square

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

### 2 Concentric Octagons

Illustration of 2 regular concentric octagons.

### 2 Concentric Octagons

Illustration of 2 regular concentric octagons.

### 3 Concentric Octagons

Illustration of 3 regular concentric octagons that are equally spaced.

### 4 Concentric Octagons

Illustration of 4 regular concentric octagons that are equally spaced.

### 2 Concentric Pentagons

Illustration of 2 concentric pentagons.

### 2 Concentric Pentagons

Illustration of 2 concentric pentagons.

### 2 Congruent Rotated Pentagons

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

### 3 Concentric Pentagons

Illustration of 3 concentric pentagons that are equally spaced.

### 4 Concentric Pentagons

Illustration of 4 concentric pentagons that are equally spaced.

### 4 Congruent Rotated Pentagons

Illustration of 4 regular congruent pentagons that have the same center. Each pentagon has been rotated…

### 8 Congruent Rotated Pentagons

Illustration of 8 regular congruent pentagons that have the same center. Each pentagon has been rotated…