【简答题】如图1,在同一平面内,将两个全等的等腰直角三角形 ABC 和 AFG 摆放在一起, A 为公共顶点,∠ BAC =∠ AGF =90°,它们的斜边长为 ,若? ABC 固定不动,? AFG 绕点 A 旋转, AF、AG 与边 BC 的交点分别为 D、E (点 D 不与点 B 重合,点 E 不与点 C 重合),设 BE=m,CD=n (1)请在图1中找出两对相似而不全等的三角形,并选取其中一对证明它...
【简答题】听下面一段材料,回答第1-3题。 1. Why did the artist go to a beautiful village for a holiday? A. Because he wanted to paint some good picture. B. Because he wanted to have a good rest. C. Because a peasant wanted h...
【简答题】听下面一段材料, 回答第1至3 题. 1. Why did the artist go to a beautiful village for a holiday? A. Because he wanted to paint some good pictures. B. Because he wanted to have a good rest. C. Because a peasant wante...