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2018中考数学每日一题(1)
2017-10-12 10:25
来源:新东方在线
作者:
1、已知:如图,O是半圆的圆心,C、E是圆上的两点,CD⊥AB,EF⊥AB,EG⊥CO. 求证:CD=GF.(初二)
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