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GoGeometry Action 13!
Autor:
Tim Brzezinski
Tópico:
Circuferência
Creation of this applet was inspired by a
tweet
from
Antonio Gutierrez
. In the applet below, the
blue circle
and
green circle
are concentric circles.
How can you formally prove what this applet informally illustrates?
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旁切圓、內切圓
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