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OpenStudy (anonymous):
I vaguely remember my teacher saying that any triangle that is inscribed in a semi circle is always a right triangle. is that true? because i kinda proved him wrong, or i heard something wrong... is there a specific rule for that?
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OpenStudy (anonymous):
yes, its correct
OpenStudy (anonymous):
|dw:1345574401587:dw|
OpenStudy (anonymous):
|dw:1345575012191:dw| 2A+C =180 2B+D=180 2A+2B +C+D=360 but C+D = 180, so: 2A+2B+180=360 2A+2B = 180 A+B = 90 which prooves the staement
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