题目内容
如图.
(1)AB=AC+______=AD+______=______+CD+______;
(2)AC=______-CD=AB-______-______;
(3)AD+BC=AB+______.
(4)若AC=BD,则______=______.
(1)AB=AC+______=AD+______=______+CD+______;
(2)AC=______-CD=AB-______-______;
(3)AD+BC=AB+______.
(4)若AC=BD,则______=______.
(1)AB=AC+CB=AD+BD=AC+CD+BD;
(2)AC=AD-CD=AB-CD-BD;
(3)AD+BC=AB+CD;
(4)若AC=BD,则AC+CD=BD+CD,
即AD=BC.
(2)AC=AD-CD=AB-CD-BD;
(3)AD+BC=AB+CD;
(4)若AC=BD,则AC+CD=BD+CD,
即AD=BC.
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