本课配套习题挑战模式1/5
单选题
难度系数:
1.平行四边形ABCD中,AC、BD是两条对角线,如果添加一个条件,即可推出平行四边形ABCD是矩形,那么这个条件是( )
A: AB=BC |
B: AC=BD |
C: AC⊥BD |
D: AB⊥BD |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5a+56KeS57q/55u4562J55qE5bmz6KGM5Zub6L655b2i5piv55+p5b2i5Yik5pat77yO
- 答案:Qg==
6Kej77yaQeOAgeaYr+mCu+i+ueebuOetie+8jOWPr+W+l+WIsOW5s+ihjOWbm+i+ueW9okFCQ0TmmK/oj7HlvaLvvIzmlYXkuI3mraPnoa7vvJs8YnI+QuOAgeaYr+Wvueinkue6v+ebuOetie+8jOWPr+aOqOWHuuW5s+ihjOWbm+i+ueW9okFCQ0TmmK/nn6nlvaLvvIzmlYXmraPnoa7vvJs8YnI+Q+OAgeaYr+Wvueinkue6v+S6kuebuOWeguebtO+8jOWPr+W+l+WIsOW5s+ihjOWbm+i+ueW9okFCQ0TmmK/oj7HlvaLvvIzmlYXkuI3mraPnoa7vvJs8YnI+ROOAgeaXoOazleWIpOaWre+8jjxicj7mlYXpgIlC77yO
本课配套习题挑战模式2/5
单选题
难度系数:
2.在判断“一个四边形门框是否为矩形”的数学活动课上,一个合作学习小组的4位同学分别拟定了如下的方案,其中正确的是( )
A: 测量对角线是否相等 |
B: 测量两组对边是否分别相等 |
C: 测量一组对角是否都为直角 |
D: 测量其中三个角是否都为直角 |
一次做对,真牛!
+5奖励规则>
- 提示1:55+p5b2i55qE5Yik5a6a5a6a55CG5pyJ77yaPGJyPu+8iDHvvInmnInkuIDkuKrop5LmmK/nm7Top5LnmoTlubPooYzlm5vovrnlvaLmmK/nn6nlvaLvvJs8YnI+77yIMu+8ieacieS4ieS4quinkuaYr+ebtOinkueahOWbm+i+ueW9ouaYr+efqeW9ou+8mzxicj7vvIgz77yJ5a+56KeS57q/5LqS55u45bmz5YiG5LiU55u4562J55qE5Zub6L655b2i5piv55+p5b2i77yM5o2u5q2k5Yik5pat77yO
- 答案:RA==
6Kej562U77yaQeOAgeWvueinkue6v+ebuOetie+8jOWbm+i+ueW9ouS4jeS4gOWumuaYr+efqeW9ou+8jOS+i+WmguetieiFsOair+W9ou+8mzxicj5C44CB5Lik57uE5a+56L6555u4562J77yM5Zub6L655b2i5Lmf5LiN5LiA5a6a5piv55+p5b2i77yM5L6L5aaC5bmz6KGM5Zub6L655b2i77ybPGJyPkPjgIHkuKTnu4Tlr7nop5Lpg73kuLrnm7Top5LvvIzlm5vovrnlvaLkuI3kuIDlrprmmK/nn6nlvaLvvIzlm6DkuLrlj6bkuKTkuKrop5LluqbmlbDkuI3noa7lrprvvJs8YnI+ROOAgeagueaNruefqeW9oueahOWIpOWumu+8jOS4ieS4quinkumDveS4uuebtOinku+8jOWbm+i+ueW9ouWwseaYr+efqeW9ou+8jjxicj7mlYXpgIlE77yO
本课配套习题挑战模式3/5
单选题
难度系数:
3.如图,四边形ABCD的对角线为AC、BD,且AC=BD,则下列条件能判定四边形ABCD为矩形的是( )
A: BA=BC |
B: AC、BD互相平分 |
C: AC⊥BD |
D: AB∥CD |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u55+p5b2i55qE5Yik5a6a5pa55rOV6Kej562U77yO
- 答案:Qg==
6Kej77ya6IO95Yik5a6a5Zub6L655b2iQUJDROaYr+efqeW9oueahOadoeS7tuS4ukFD44CBQkTkupLnm7jlubPliIbvvI48YnI+55CG55Sx5aaC5LiL77ya4oi1QUPjgIFCROS6kuebuOW5s+WIhu+8jDxicj7iiLTlm5vovrnlvaJBQkNE5piv5bmz6KGM5Zub6L655b2i77yMPGJyPuKItUFDPUJE77yMPGJyPuKItCYjOTY0OTtBQkNE5piv55+p5b2i77yOPGJyPuWFtuWug+S4ieS4quadoeS7tuWGjeWKoOS4ikFDPUJE5Z2H5LiN6IO95Yik5a6a5Zub6L655b2iQUJDROaYr+efqeW9ou+8jjxicj7mlYXpgIlC77yO
本课配套习题挑战模式4/5
单选题
难度系数:
4.若顺次连接四边形ABCD各边中点所得四边形是矩形,则四边形ABCD必然是( )
A: 菱形 |
B: 对角线相互垂直的四边形 |
C: 正方形 |
D: 对角线相等的四边形 |
一次做对,真牛!
+5奖励规则>
- 提示1:5q2k6aKY6KaB5qC55o2u55+p5b2i55qE5oCn6LSo5ZKM5LiJ6KeS5b2i5Lit5L2N57q/5a6a55CG5rGC6Kej
- 提示2:5qC55o2u5LiJ6KeS5b2i5Lit5L2N57q/5a6a55CG55+l77ya5omA5b6X5Zub6L655b2i55qE5a+56L656YO95bmz6KGM5LiU55u4562J77yM6YKj5LmI5YW25b+F5Li65bmz6KGM5Zub6L655b2i77yM6Iul5omA5b6X5Zub6L655b2i5piv55+p5b2i77yM6YKj5LmI6YK76L655LqS55u45Z6C55u077yM5pWF5Y6f5Zub6L655b2i55qE5a+56KeS57q/5b+F5LqS55u45Z6C55u0
- 答案:Qg==
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
本课配套习题挑战模式5/5
单选题
难度系数:
5.如图所示,四边形ABCD的对角线AC,BD交于点O.下列条件中,可判定四边形ABCD为矩形的是( )
A: AC=BD |
B: △AOB是等边三角形 |
C: AO=CO=BO=DO |
D: ∠ABC+∠BCD+∠CDA+∠DAB=360° |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u55+p5b2i55qE5oCn6LSo5Y+v55+l55+p5b2i55qE5a+56KeS57q/5bmz5YiG5LiU55u4562J5Y+v5b6XQU89Q089Qk89RE/vvIzmlYXmsYLop6M=
- 答案:Qw==
6Kej77yaQeOAgeWvueinkue6v+S6kuebuOW5s+WIhuS4lOebuOetieeahOWbm+i+ueW9ouaYr+efqeW9ou+8jOaVheS4jeiDve+8mzxicj5C44CB4pazQU9C5piv562J6L655LiJ6KeS5b2i5LiN6IO95Yik5a6a5Zub6L655b2iQUJDROS4uuefqeW9ou+8mzxicj5D44CB5a+56KeS57q/5LqS55u45bmz5YiG5LiU55u4562J55qE5Zub6L655b2i5piv55+p5b2i77yM5pWF6IO95Yik5a6a77ybPGJyPkTjgIHlm5vovrnlvaLnmoTlhoXop5LlkozmmK8zNjDCsO+8jOaVheS4jeiDve+8jjxicj7mlYXpgIlD77yO