Illustration of a two polygons. Polygons may be mutually equiangular without being mutually equilateral.

Illustration of two polygons. Polygons may be mutually equilateral without being mutually equiangular…

Illustration of 3 regular concentric heptagons/septagons that are equally spaced.

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

Illustration of equal spheres with equilateral and equiangular triangles.

Illustration of a square inscribed in a square. The interior square is rotated 45° in relation to…

Illustration of 12 congruent squares that have the same center. Each square has been rotated 7.5°…

Illustration of 16 congruent squares that have the same center. Each square has been rotated 5.625°…

Illustration of 2 concentric squares whose vertices are connected by line segments.

Illustration of 2 congruent squares that have the same center. One square has been rotated 45° in…

Illustration of 3 congruent squares that have the same center. Each square has been rotated 30°…

Illustration of 4 congruent squares that have the same center. Each square has been rotated 22.5°…

Illustration of 6 congruent squares that have the same center. Each square has been rotated 15°…

Illustration of 8 congruent squares that have the same center. Each square has been rotated 11.25°…

Illustration of a square inscribed in a square that is inscribed in another square. Each successive…

Illustration of a square inscribed in a square that is inscribed in another square. Each successive…

Illustration of a square inscribed in a square that is inscribed in another square. Each successive…

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

An illustration showing an isosceles triangle in an equilateral triangle.

Illustration of an equilateral triangle inscribed in an equilateral triangle. The smaller triangle is…

Illustration of an equilateral triangle inscribed in an equilateral triangle by joining the midpoints…

Illustration of an equilateral triangle inscribed in an equilateral triangle by joining the midpoints…

Illustration of an equilateral triangle inscribed in an equilateral triangle by joining the midpoints…