Heptahedron

The regular heptahedron is a one-sided surface made from four Triangles and threeQuadrilaterals. It is topologically equivalent to the Roman Surface (Wells 1991). Whileall of the faces are regular and vertices equivalent, the heptahedron is self-intersecting and is therefore not consideredan Archimedean Solid. There are three semiregular heptahedra: the pentagonal and pentagrammicPrisms, and a Faceted Octahedron (Holden 1991).

References

Holden, A. Shapes, Space, and Symmetry. New York: Dover, p. 95, 1991.

Wells, D. The Penguin Dictionary of Curious and Interesting Geometry. New York: Viking Penguin, p. 98, 1992.

• Fermat 4n+1 Theorem
• Fermat Compositeness Test
• Fermat Conic
• Fermat Difference Equation
• Fermat Diophantine Equation
• Fermat Equation
• Fermat-Euler Theorem
• Fermatian
• Fermat-Lucas Number
• Fermat Number
• Fermat Number (Lucas)
• Fermat Point
• Fermat Polynomial
• Fermat Prime
• Fermat Pseudoprime
• Fermat Quotient
• Fermat's Algorithm
• Fermat's Congruence
• Fermat's Conjecture
• Fermat's Factorization Method
• Fermat's Last Theorem
• Fermat's Lesser Theorem
• Fermat's Little Theorem
• Fermat's Little Theorem Converse
• Fermat Spiral Inverse Curve