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�� 44 �� OB � CD ��, � OA � CD � �� . �� OA � CD, ��: �) ZAOB = 40�; �) ZAOB = 135�; �) ZAOB =...

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44 �� OB � CD ��, � OA � CD � �� . �� OA � CD, ��: �) ZAOB = 40�; �) ZAOB = 135�; �) ZAOB = 90�.

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