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File:Regular star figure 7(2,1).svg
来自维基百科,自由的百科全书
Found in articles
File:Regular star figure 7(2,1).svg
Description
Regular
star
figure
7
(
2,1
).
svg
English: en:
star
polygon
star
figure
n{
2,1
} Date 31 January 2015 Source Own work Author Tomruen
File:Abyss of regular octagons.svg
pale disc a dark convex octagon and its
star
‑shaped hole share their vertices. Through the central hole we see a dark
star
octagon, its central zone is a duplicate