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判断下列各图中的∠1与∠2是否是内错角？是哪两条直线被哪条直线所截？
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判断下列各图中的∠1和∠2是否是同位角是哪两条直线被哪条直线所截
判断下列各图中的∠1与∠2是否是内错角是哪两条直线被哪条直线所截
把下面在平面内成立的结论类比地推广到空间并判断类比的结论是否成立1如果一条直线和两条平行线中的一条相
判断下列各图中的∠1与∠2是否是同位角是哪两条直线被哪条直线所截
两条直线被第三条直线所截下列条件中不能判断这两条直线平行的的是
同位角相等
内错角相等
同旁内角互补
同旁内角相等
下列命题中真命题有1直线外一点与直线上各点连接的所有线段中垂线段最短2两条直线被第三条直线所截内错角
1个
2个
3个
4个
如图所示∠1与∠2∠3与∠4各是哪一条直线截哪两条直线而成的它们各是什么关系的角
判断下列各图中的∠1与∠2是否是同旁内角是哪两条直线被哪条直线所截
下列说法正确的是
）如果两个角相等，那么这两个角是对顶角； （
）经过一点有且只有一条直线与已知直线平行； （
）如果两条直线被第三条直线所截，那么内错角相等； （
）联结直线外一点与直线上各点的所有线段中，垂线段最短.
判断下列各图中的∠1与∠2是否是内错角是哪两条直线被哪条直线所截
下列命题①两条直线相交一角的两邻补角相等则这两条直线垂直②两条直线相交一角与其邻补角相等则这两条直
4
3
2
1
下列命题①两条直线相交一角的两邻补角相等则这两条直线垂直②两条直线相交一角与其邻补角相等则这两条直
4
3
2
1
判断下列各图中的∠1与∠2是否是内错角是哪两条直线被哪条直线所截
判断下列各图中的∠1和∠2是否是同位角是哪两条直线被哪条直线所截
判断下列各图中的∠1与∠2是否是同旁内角是哪两条直线被哪条直线所截
下列命题中真命题的个数为.①在同一平面内两条直线被第三条直线所截同位角相等②两条平行线被第三条直线所
4
3
2
1
判断下列各图中的∠1和∠2是否是同位角是哪两条直线被哪条直线所截
把下面在平面内成立的结论类比地推广到空间并判断类比的结论是否成立.1如果一条直线和两条平行线中的一条
判断下列各图中的∠1与∠2是否是同旁内角是哪两条直线被哪条直线所截
判断下列各图中的∠1与∠2是否是同旁内角是哪两条直线被哪条直线所截
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2016年全国两会即中华人民共和国第十二届全国人民代表大会第四次会议和中国人民政治协商会议第十二届全国委员会第四次会议分别于2016年3月5日和3月3日在北京开幕．为了解哪些人更关注两会某机构随抽取了年龄在15～75岁之间的100人进行调查并按年龄绘制的频率分布直方图如图所示其分组区间为[1525[2535[3545[5565[6575]．把年龄落在区间[1535和[3575]内的人分别称为“青少年人”和“中老年人”经统计“青少年人”和“中老年人”的人数之比为911． 1求图中ab的值根 2若“青少年人”中有15人关注两会根据已知条件完成下面的2×2列联表根据此统计结果能否有99%的把握认为“中老年人”比“青少年人”更加关注两会 附参考公式和临界值表 K2＝其中n＝a+b+c+d．
如图所示的简谐运动图象中在t1和t2时刻运动质点相同的量为
10分假如英语课上老师要求同桌之间交换修改作文请你修改你同桌的以下作文.文中共有10处错误每句中最多有两处.错误涉及单词的增加删除或修改. 增加在缺词处加一个漏词符号∧并在此符号下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错词下面划一横线并在该词下面写出修改后的词. 注意1每处错误及其修改均仅限一词; 2只允许修改10处多者从第11处起不计分. OnedaylittleTonywenttoashoppingcenterwithhisparent.Itwasverycrowded.Tonysawatoyonashopwindow.Helikeditsoverymuchthathequicklywalkedintotheshop.Afterlooksatthetoyforsometimeheturnedaroundandfoundwherehisparentsweremissing.Tonywasscaredandbeguntocry.Awomansawhimcryingandtellinghimtowaitoutsideashop.Fiveminuteslater.Tonysawparents.MomsaidHownicetoseeyouagain!DadandIwereterribleworried.Tonypromisedherthatthiswouldneverhappenagain.
30分Wheredoyougowhenyouwanttolearnsomething?Afriend?Atutor?Theseareall41acesoflearning.Butitmaywellbethatthelearningyoureallywant42somewhereelseinstead.Ihadthe43ofseeingthisfirsthandona44. Mydaughterplaysonarecreationalsoccerteam.Theydidverywellthisseasonandso45atournamentwhichnormallywasonlyformoreskilledclubteams.Thisledtosome46experiencesonSaturdayastheyplayedagainstteams47trained.Throughthefirsttwogamesher48didnotgetonseriousshotongoal.AsapparentI49seeingmydaughterplayingherbest50stilldefeated. ITseemedthatsomethingclickedwiththe51betweenSaturdayandSunday.Whenthey52fortheirSundaygametheywere53different.Theyhadbegunintegrate融合thekindsofplayandteamworktheyhad54thedaybeforeintotheir55.Theyplayedaggressivelyand56scoredagoal. It57methatplayingagainsttheotherteamwasagreat58momentforallthegirlsontheteam.Ithinkitisageneralprinciple.59isthebestteacher.Thelessonstheymaynotbe60whattheywouldhavegotteninschool.Butarecertainlymorepersonalandmeaningfulbecausetheyhadtoworkthemoutontheirown. 41.A.public B.traditional C.official D.special 42.A.passes B.works C.lies D.ends 43.A.dream B.idea C.habit D.chance 44.A.trip B.holiday C.weekend D.square 45.A.won B.entered C.organized D.watched 46.A.painful B.strange C.common D.practical 47.A.less B.poorly C.newly D.better 48.A.fans B.tutors C.class D.team 49.A.imagined B.hated C.avoided D.missed 50.A.if B.or C.but D.as 51.A.girls B.parents C.coaches D.viewers 52.A.dressed B.showedup C.madeup D.planned 53.A.slightly B.hardly C.basically D.completely 54.A.seen B.known C.heard D.read 55.A.styles B.training C.game D.rules 56.A.even B.still C.seldom D.again 57.A.confused B.struck C.reminded D.warned 58.A.touching B.thinking C.encouraging D.learning 59.A.Experience B.Independence C.Curiosity D.Interest 60.A.harmfulto B.mixedwith C.differentfrom D.appliedto.
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