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滕黎申3169...∠ACB=90°,D是AB的中点,以DC为直径的⊙O交△ABC的三边,交点分别是G,E,F点.EG与CD交点为M.(1)求证:∠GEF=∠A;(2)求证:△OME∽△EMC;... -
殷话锦18989366001 ______[答案] (1)证明:连接DF,如图所示: ∵CD是圆O直径, ∴∠CFD=90°, 又∵∠ACB=90°, ∴DF∥AC, ∴∠BDF=∠A, ∵∠BDF... ∴DC=DA= 1 2AB, ∴∠DCA=∠A, 又由(1)知∠GEF=∠A, ∴∠DCA=∠GEF, 又∵∠OME=∠EMC, ∴△OME∽△...
滕黎申3169安卓match - parent 的用法是什么,安卓中android:layout - width=＂match - parent＂ 这个match - parent 的parent父类指的是什么,match - parent 具体的意思和... -
殷话锦18989366001 ______[答案] 匹配该布局的宽度,简单点说手机屏幕多宽,该布局就可以多宽
滕黎申3169如图1,在平面直角坐标系中,以坐标原点O为圆心的⊙O的半径为2 - 1,直线l:y= - x - 2与坐标轴分别交于A、C两点,点B的坐标为(4,1),⊙B与x轴相切于点M.... -
殷话锦18989366001 ______[答案] (1)∵点A是直线l:y=-x-2与坐标轴x轴的交点∴y=0,即0=-x-2,解得x=−2所以点A(−2,0),同理点C(0,−2)∴OA=OC∵OA⊥OC,∴∠CAO=45°(2)过B1做B1P垂直于l′角l′于点P,连接B1A,B1O,B1N如图,设⊙B平移...
滕黎申3169求150个英语谜语. -
殷话锦18989366001 ______[答案] 1.Why are girls afraid of the letter C ? 2.Why is the letter E so important? 3.Why are the letter G and letter S in ＂gloves＂ ... 20.If you throw a stone into the Red Sea,what will it ome? 21.If two's company and three's crowd,what's four and five? 22.The ...
滕黎申3169{＂content＂:＂Mini Book Excerpts\uff08\u8282\u9009\uff09BiographyWhen Salinger learned that a car park was to be built on the land\uff0cthe middle - aged ... -
殷话锦18989366001 ______[答案] 56.答案:D.细节理解题.根据第二段第一句“J.D.Salinger:A Life by Kenneth Slawenski(Random House,$27)”可知如果我们想了解关于Salinger的情况,就读由Random House出版的这本书.故选D.57.答案:D....
滕黎申3169完美OMEA19如何连接360手机助手
殷话锦18989366001 ______ 你好这样的情况建议打开电脑上的360手机助手,然后打开打开手机设置>开发人员选项>USB调试和屏幕唤醒打勾,插入数据线360手机助手会找到硬件并自动安装驱动,安装驱动后就可以连接上了,希望能帮到你.
滕黎申31691:Find the letter which will end the first word and start the second.Exanple peac(h)omecar( )ive pla( )ice2:Use from 1 to 8 and from - 1 to - 8 to fill in the empty ... -
殷话锦18989366001 ______[答案] 1 car(d)ive; pla(n)ice 2 You forgot to show us what the box looks like,请补充后追问 3 P=3; T=5; A=9; M=6; S=8; L=2; D=0 3 4 5 9 5 4 +5 4 6 9 5 4 ========== 8 9 2 9 0 8
滕黎申3169如图,在平面直角坐标系中,A是反比例函数y=kx(x>0)图象上一点,作AB⊥x轴于B点,AC⊥y轴于C点,得正方形OBAC的面积为16.(2)点P(m,163)是第一象... -
殷话锦18989366001 ______[答案] (1)∵正方形OBAC的面积为16, ∴A(4,4);(2分) 将A点代入反比例函数y= k x(x>0)中,得反比例函数的解析式:y= 16 x;(5分) ... ∴OE=OD=QF,而M是Rt△FHE的斜边中点, ∴EM=HM=FM; ∵∠OEH=∠QFM=45°, ∴△QMF≌△OME; ∴QM=OM; ∴ QM ...