论文部分内容阅读
题目:如图1,AB是Rt△ABC的斜边,CD是高. 求证:(1)CD2=AD·BD; (2)AC2=AD·AB, BC2=BD·AB.
Title: As shown in Figure 1, AB is the hypotenuse of Rt △ ABC, and CD is high. Proof: (1) CD2=AD·BD; (2) AC2=AD·AB, BC2=BD·AB.