【简答题】We students enjoy our school life, but sometimes we feel unhappy.It’s every student’s dream. At the of every term, we have six exams. Last week, I finished my final exams. The math exam was the easies...
【单选题】听力原文:W: Hello, Jack! Do you think you can give me a lift to the station? I must go there to pick my sister. M: I'm terribly sorry, but I can't. I have to be at work by 8:30. I can call you a taxi, tho...
【简答题】如图,在10×10的正方形网格中,每个小正方形的边长均为1个单位.将△ABC沿着BC翻折得到△DBC,把△DBC向下平移3个单位得到△D 1 B 1 C 1 ,再把△D 1 B 1 C 1 绕点C1顺时针旋转90°得到△D 2 B 2 C 2 .请你分别画出△DBC、△D 1 B 1 C 1 和△D 2 B 2 C 2 (不要求写画法)
【简答题】如图,方格纸中的每个小方格都是边长为1个单位长度的正方形,Rt△ABC的顶点均在格点上,在建立平面直角坐标系以后,点A的坐标为(-6,1),点B的坐标为(-3,1),点C的坐标为(-3,3). (1)将Rt△ABC沿X轴正方向平移5个单位得到Rt△A 1 B 1 C 1 ,试在图上画出Rt△A 1 B 1 C 1 的图形,并写出点A 1 的坐标。 (2)将原来的Rt△ABC绕着点B顺时针旋转90°...