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Равнобедреният трапец ABCD (АВ |...
Author:
Краси
Равнобедреният трапец ABCD (АВ || CD) е вписан в окръжност k(0), а Q е пресечната точка на правите AD и BC. Докажете, че четириъгълниците AOCQ и BODQ са вписани.
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