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2. Star polyhedron - Wikipedia

   en.wikipedia.org/wiki/Star_polyhedron

   In geometry, a star polyhedron is a polyhedron which has some repetitive quality of nonconvexity giving it a star-like visual quality. There are two general kinds of star polyhedron: Polyhedra which self-intersect in a repetitive way. Concave polyhedra of a particular kind which alternate convex and concave or saddle vertices in a repetitive way.

3. Star polygon - Wikipedia

   en.wikipedia.org/wiki/Star_polygon

   A regular star polygon is a self-intersecting, equilateral, and equiangular polygon. A regular star polygon is denoted by its Schläfli symbol { p / q }, where p (the number of vertices) and q (the density ) are relatively prime (they share no factors) and where q ≥ 2.

4. Star (shape) - Wikipedia

   en.wikipedia.org/?title=Star_(shape)&redirect=no

   Pages for logged out editors learn more. Contributions; Talk; Star (shape)

5. Star domain - Wikipedia

   en.wikipedia.org/wiki/Star_domain

   A star domain (equivalently, a star-convex or star-shaped set) is not necessarily convex in the ordinary sense. An annulus is not a star domain.. In geometry, a set in the Euclidean space is called a star domain (or star-convex set, star-shaped set [1] or radially convex set) if there exists an such that for all , the line segment from to lies in .

6. Enneagram (geometry) - Wikipedia

   en.wikipedia.org/wiki/Enneagram_(geometry)

   The final stellation of the icosahedron has 2-isogonal enneagram faces. It is a 9/4 wound star polyhedron, but the vertices are not equally spaced.: The Fourth Way teachings and the Enneagram of Personality use an irregular enneagram consisting of an equilateral triangle and an irregular hexagram based on 142857.

7. Star (glyph) - Wikipedia

   en.wikipedia.org/wiki/Star_(glyph)

   stress outlined white star U+2729 circled white star U+272A open center black star U+272B black center white star U+272C outlined black star U+272D heavy outlined black star U+272E pinwheel star U+272F shadowed white star U+2730 white medium star ⭐: U+2B50 black small star ⭑ U+2B51 white small star ⭒ U+2B52 glowing star 🌟: U+1F31F ...

8. Heptagram - Wikipedia

   en.wikipedia.org/wiki/Heptagram

   In George R. R. Martin's novel series A Song of Ice and Fire and its TV version Game of Thrones, a seven-pointed star serves as the symbol of the Faith of the Seven. In the manga series MeruPuri, a magical mirror/ portal is in the shape of a heptagram. The symbol is also seen during spellcasting.

9. Star-shaped polygon - Wikipedia

   en.wikipedia.org/wiki/Star-shaped_polygon

   In geometry, a star-shaped polygon is a polygonal region in the plane that is a star domain, that is, a polygon that contains a point from which the entire polygon boundary is visible. Formally, a polygon P is star-shaped if there exists a point z such that for each point p of P the segment ⁠ z p ¯ {\displaystyle {\overline {zp}}} ⁠ lies ...