G.155 polygon circumscribed about a polygon — Heath

IV.def.2

Similarly a figure is said to be circumscribed about a figure when the respective sides of the circumscribed figure pass through the respective angles of that about which it is circumscribed.

Dependency Graph

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Required for

G.157, G.161, G.162, G.163, G.164, G.586, G.589, G.597, G.601