Search
Subject Categories:
 Art (449)
 Asperger's (32)
 Blogging (11)
 China and the Han (9)
 eBay (3)
 Education (92)
 Fiction (28)
 Geography (27)
 History (37)
 Humor (47)
 Life (358)
 Mandalas (122)
 Mathematics (1,244)
 Mental Health (72)
 Music (43)
 Mysteries (16)
 Politics (120)
 Quotations (64)
 Religion (58)
 Satire (12)
 Science and Scientists (120)
 Follow RobertLovesPi.net on WordPress.com
MostViewed Posts, Recently:

Recent Posts
 Four Polyhedra Featuring Heptagons
 A Pyritohedral, Stellated Polyhedron, and Its Convex Hull
 A Chiral Polyhedron Made of Kites and Triangles, Along with Its Dual, Made of Triangles and Isosceles Trapezoids
 Compelling Reading, I’m Sure, from Facebook
 The Liebster Award for Blogging
 A Second Type of Double Icosahedron, and Related Polyhedra
 Augmenting, and Then Reaugmenting, the Icosahedron, with Icosahedra
 The Double Icosahedron, and Some of Its “Relatives”
 Two Excellent Mathematical Websites
 The Compound of the Octahedron and the Small Stellated Dodecahedron
Explore RobertLovesPi By Topic
 Arkansas
 Art
 Asperger's
 astronomy
 atheism
 atheist
 chemistry
 chiral
 circle
 cluster
 compound
 cube
 cuboctahedron
 dodecahedron
 dual
 Education
 enneagon
 faceted
 faceting
 geometric
 geometrical
 geometrical art
 geometry
 Golden Ratio
 hexagon
 Humor
 humour
 icosahedron
 icosidodecahedral
 icosidodecahedron
 kite
 life
 mandala
 mandalas
 math
 mathematical
 mathematical art
 Mathematics
 music
 nonagon
 octagon
 octahedron
 op art
 pentagon
 physics
 politics
 polygon
 polyhedra
 polyhedral
 polyhedron
 president
 quotation
 quote
 religion
 rhombi
 rhombic dodecahedron
 rhombicosidodecahedron
 rhombic triacontahedron
 rhombus
 school
 science
 snub dodecahedron
 star
 stellated
 stellation
 symmetry
 tessellation
 tetrahedron
 tiling
 triangle
 Trump
 truncated icosahedron
 USA
 words
 zonohedron
Hit Counter
 334,832 hits
Tag Archives: heptagon
Four Polyhedra Featuring Heptagons
Heptagons only appear infrequently in interesting polyhedra. I recently found a few that I like. To form the first of these solids, shown above, I started with the icosidodecahedron, dropped the symmetry of the model from icosahedral to tetrahedral, and … Continue reading
A TetrahedrallySymmetric Polyhedron Featuring Heptagons
Created using Stella 4d: Polyhedron Navigator; see this website to try it for yourself!
Posted in Mathematics
Tagged geometry, heptagon, Mathematics, polyhedral, polyhedron
Leave a comment
Three Polyhedra Featuring Heptagons
For some reason I do not fully understand, polyhedra featuring heptagons, even if irregular, do not appear often, at least not in my geometrical investigations — so I was pleased to find these three, using Stella 4d: Polyhedron Navigator, available … Continue reading
A Box of Heptagons
It is hard to find polyhedra which contain regular heptagons, but that simply makes the search more challenging, and therefore more fun. This polyhedron features six regular heptagons, and was created with Stella 4d, software available here.
A Star with 49 Points, to Celebrate the 49Hour Weekend Caused by the End of Daylight Saving Time, Tomorrow, in Most of the USA
This is the weekend that Daylight Saving Time (or DST) ends in most parts of the USA, which means that this is the only weekend of the year, here, which lasts 49 hours, rather than the usual 48. To celebrate … Continue reading
Posted in Art, Life, Mathematics, Politics
Tagged America, Arizona, Art, daylight saving time, daylight savings time, DST, geometric, geometrical, geometry, heptagon, heptagram, mathematical, Mathematics, seven, star, time, USA
3 Comments
Heptamandala
Posted in Art, Mandalas
Tagged 7, Art, geometric, geometrical, heptagon, heptagonal, mandala, mathematical, seven
Leave a comment
A Survey of Right Angles in Convex Heptagons
In how many ways can different numbers of right angles appear in convex heptagons? Heptagons do not have to have right angles at all, of course. If a heptagon has exactly one right angle, only one arrangement is possible: a … Continue reading