(2) 7.5;
(3) A(-9,5),B(-6,4),C(-5,2),D(-2,0),E(3,-1),F(1,-3),G(-1,-2);
(1)在坐标平面上画出下列个点:A(-17,-5),B(-14,-6),C(-13,-8),D(-10,-10),E(-5,-11),F(-7,-13),与G(-9,-12);用线段依次连接各点,画出北斗七星;连接G和D,可得到一个‘碗’;
(1)在坐标平面上画出下列个点:A(-17,-5),B(-14,-6),C(-13,-8),D(-10,-10),E(-5,-11),F(-7,-13),与G(-9,-12);用线段依次连接各点,画出北斗七星;连接G和D,可得到一个‘碗’;
(2)计算北斗星中‘碗’的面积;
(3)把北斗星右移8个单位、上移10个单位后,写出各点的坐标.
急,,
只求第二题和第三题,,
(2)计算北斗星中‘碗’的面积;
(3)把北斗星右移8个单位、上移10个单位后,写出各点的坐标.
急,,
只求第二题和第三题,,
数学人气:626 ℃时间:2020-04-30 17:37:45
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