看图填空.(1)用数对表示图中梯形的四个顶点A,B,C,D的位置.A ①用数对表示梯形四个顶点A、B、C、D的位置.A(_____...

\u770b\u56fe\u586b\u7a7a\uff0e\u2460\u7528\u6570\u5bf9\u8868\u793a\u56fe\u4e2d\u68af\u5f62\u56db\u4e2a\u5b9a\u70b9\u7684\u4f4d\u7f6e\uff0eA\uff08\u3000\u3000\uff09 B\uff08\u3000\u3000\uff09 C\uff08\u3000\u3000\uff09 D\uff08\u3000\u3000\uff09\u2461\u628a\u68af\u5f62\u5411\u53f3

\uff081\uff09\u6839\u636e\u6570\u5bf9\u8868\u793a\u4f4d\u7f6e\u7684\u65b9\u6cd5\u53ef\u77e5\uff1aA\uff081\uff0c2.5\uff09\uff1bB\uff081\uff0c1\uff09\uff1bC\uff084\uff0c1\uff09\uff1bD\uff084\uff0c3\uff09\uff1b\uff082\uff09\u628a\u68af\u5f62\u7684\u56db\u4e2a\u9876\u70b9\u5411\u53f3\u5e73\u79fb5\u683c\uff0c\u518d\u4f9d\u6b21\u8fde\u63a5\u8d77\u6765\u5373\u53ef\u5f97\u51fa\u5e73\u79fb\u540e\u7684\u56fe\u5f62\uff0c\u518d\u6839\u636e\u6570\u5bf9\u8868\u793a\u4f4d\u7f6e\u7684\u65b9\u6cd5\u53ef\u77e5A1\uff085\uff0c2.5\uff09\uff0cB1\uff085\uff0c1\uff09\uff0cC1\uff088\uff0c1\uff09\uff0cD1\uff088\uff0c3\uff09\uff1b\u6545\u7b54\u6848\u4e3a\uff1a\uff081\uff091\uff0c2.5\uff1b1\uff0c1\uff1b4\uff0c1\uff1b4\uff0c3\uff1b\uff082\uff095\uff0c2.5\uff1b5\uff0c1\uff1b8\uff0c1\uff1b8\uff0c3\uff0e

\uff081\uff09\u6839\u636e\u6570\u5bf9\u8868\u793a\u4f4d\u7f6e\u7684\u65b9\u6cd5\u53ef\u77e5\uff1aA\uff087\uff0c4\uff09\uff1bB\uff0811\uff0c4\uff09\uff1bC\uff0810\uff0c2\uff09\uff1bD\uff088\uff0c2\uff09\uff1b\uff082\uff09\u628a\u68af\u5f62\u7684\u56db\u4e2a\u9876\u70b9\u5411\u4e0a\u5e73\u79fb6\u683c\uff0c\u518d\u5411\u53f3\u5e73\u79fb4\u683c\uff0c\u518d\u4f9d\u6b21\u8fde\u63a5\u8d77\u6765\u5373\u53ef\u5f97\u51fa\u5e73\u79fb\u540e\u7684\u56fe\u5f621\uff1b\uff083\uff09\u628a\u4e0e\u70b9B\u76f8\u8fde\u7684\u4e24\u6761\u8fb9\u7ed5\u70b9B\u9006\u65f6\u9488\u65cb\u8f6c90\u00b0\u540e\uff0c\u518d\u5229\u7528\u68af\u5f62\u7684\u6027\u8d28\u753b\u51fa\u53e6\u5916\u4e24\u6761\u8fb9\u5373\u53ef\u5f97\u51fa\u65cb\u8f6c\u540e\u7684\u68af\u5f622\uff1b\uff084\uff09\u628a\u68af\u5f62\u7684\u4e0a\u4e0b\u5e95\u548c\u9ad8\u63092\uff1a1\u653e\u5927\uff0c\u68af\u5f62\u7684\u56db\u4e2a\u9876\u70b9\u4f4d\u7f6e\u5c31\u5df2\u7ecf\u786e\u5b9a\uff0c\u4f9d\u6b21\u8fde\u63a5\u8d77\u6765\u5373\u53ef\u5f97\u5230\u653e\u5927\u540e\u7684\u68af\u5f623\uff0e \u6545\u7b54\u6848\u4e3a\uff1a\uff081\uff097\uff1b4\uff1b11\uff1b4\uff1b10\uff1b2\uff1b8\uff1b2\uff0e

(1)根据数对表示位置的方法可知:A(2,6),B(2,4),C(4,4),D(3,6);
(2)把梯形先向下平移2格,再向右平移6格,如下图:

A′(8,4),B′(8,2),C′(10,2),D′(9,4);
(3)把梯形绕点C顺时针方向旋转90゜,再用同样的方法旋转一次,如下图:

A″(6,2),B″(6,4),C″(4,4),D″(5,2).
故答案为:(1)(2,6)(2,4)(4,4)(3,6),(2)(8,4)(8,2)(10,2)(9,4),(3)(6,2)(6,4)(4,4)(5,2).

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