题目如图,点DDD是线段ABABAB延长线上一点,点PPP是线段ADADAD的中点,点QQQ是线段BDBDBD的中点.(1)(1)(1)若AD=10AD=10AD=10,AB=6AB=6AB=6,求线段PQPQPQ的长;(2)(2)(2)若AD=2mAD=2mAD=2m,BP=nBP=nBP=n,求线段PQPQPQ的长.知识点:勾股数章节:图形的性质 / 三角形