As in right figure,in a quadrilater

As in right figure,in a quadrilateral ABCD,we have its diagonal AC bisects∠DAB,and AB=21,AD=9,BC=DC=10,then the distance from point C to line AB is______,and the length of AC is______.(英汉词典:quadrilateral 四边形;bisect 平分)
rita2291 1年前 举报
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