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![[parent]](http://images.planetmath.org:8080/images/uparrow.png) Viewing Message
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| ``note on circumferencial/central angle''
by perucho on 2007-12-15 06:50:23 |
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| Dear Roger,
In your interesting entry one also may obtain intrinsecally the subject's relation without reference to a fourth point F. The three internal radii bisect angles A,B,C according the equation
(\alpha+\gamma)+(\alpha+\beta)+(\beta+\gamma)=\pi,
so any out of the three central angles may be plugged from this. For example,
\pi-2\beta=2(\alpha+\gamma).
I would want to do such observation for if you want to add it.
Greetings,
Pedro |
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