本课配套习题挑战模式1/5
单选题
难度系数:
1.平面内3条直线最多可以把平面分成( )
A: 4部分 |
B: 5部分 |
C: 6部分 |
D: 7部分 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOeUu+WHuuWbvuW9ou+8jOagueaNruWbvuW9ouaVsOWHuuacgOWkmueahOW5s+mdouWNs+WPry4=
- 答案:RA==
6Kej77ya5aaC5Zu+77ya5bmz6Z2i5YaFM+adoeebtOe6v+acgOWkmuWPr+S7peaKiuW5s+mdouWIhuaIkDfpg6jliIYuIDxicj7mlYXpgIlELiA8YnI+PGltZyB3aWR0aD0yMzYgaGVpZ2h0PTE2OCBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzU4LzhDL3JCQUNFMU41eGJmVDlGaWRBQUFXWTd2cmVWczg0MS5wbmciIGFsdD3pnZLmnpzlrabpmaI+
本课配套习题挑战模式2/5
单选题
难度系数:
2.平面内有两两相交的三条直线,若最多有m个交点,最少有n个交点,则m+n等于( )
A: 1 |
B: 2 |
C: 3 |
D: 4 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOW5s+mdouWGheS4pOS4pOebuOS6pOeahOS4ieadoeebtOe6v++8jOacieS4pOenjeaDheWGte+8mu+8iDHvvInkuInmnaHnm7Tnur/nm7jkuqTkuo7lkIzkuIDngrnvvIzvvIgy77yJ5LiJ5p2h55u057q/55u45Lqk5LqO5LiN5ZCM55qE5LiJ54K5Lg==
- 答案:RA==
6Kej77ya5bmz6Z2i5YaF5Lik5Lik55u45Lqk55qE5LiJ5p2h55u057q/77yM5pyA5aSa5pyJM+S4quS6pOeCue+8jOacgOWwkeaciTHkuKrkuqTngrnvvIzljbNtPTPvvIxuPTHvvIw8YnI+4oi0bStuPTQuIDxicj7mlYXpgIlELiA=
本课配套习题挑战模式3/5
单选题
难度系数:
3.观察图形,并阅读相关的文字:那么8条直线相交,最多可形成交点的个数是( )
A: 21 |
B: 28 |
C: 36 |
D: 45 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOino+etlOatpOmimOeahOWFs+mUruaYr+inguWvn+WbvuW9ouaJvuWHuuinhOW+i++8jOWmguaenDjmnaHnm7Tnur/nm7jkuqTvvIzpgqPkuYjmr4/mnaHnm7Tnur/mnIDlpJrlj6/lvaLmiJA35Liq5Lqk54K5LiDnhLblkI7ljbPlj6/lvpflh7rnrZTmoYgu
- 答案:Qg==
6Kej77ya6KeC5a+f5Zu+5b2i5Y+v5b6X77yaPGJyPm7mnaHnm7Tnur/nm7jkuqTmnIDlpJrlj6/lvaLmiJDnmoTkuqTngrnkuKrmlbDkuLo8aW1nIHdpZHRoPTM5IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzU4LzhDL3JCQUNFMU41eGIyQWhCUjdBQUFCMjJtZmd0dzIzMC5wbmciPiw8YnI+4oi0OOadoeebtOe6v+ebuOS6pO+8jOacgOWkmuWPr+W9ouaIkOS6pOeCueeahOS4quaVsOS4ujxpbWcgd2lkdGg9MTg5IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzU4LzhDL3JCQUNFMU41eGIyeFAydlpBQUFEWnNZdF9oTTg5MC5wbmciPi48YnI+5pWF6YCJQi4g
本课配套习题挑战模式4/5
单选题
难度系数:
4.平面上4条直线相交,交点的个数是( )
A: 1个或4个 |
B: 3个或4个 |
C: 1个、4个或6个 |
D: 1个、3个、4个、5个或6个 |
一次做对,真牛!
+5奖励规则>
- 提示1:IDTmnaHnm7Tnur/nm7jkuqTvvIzmnIk156eN5L2N572u5YWz57O777yM55S75Ye65Zu+5b2i77yM6L+b6KGM6Kej562U
- 答案:RA==
6Kej77ya6IulNOadoeebtOe6v+ebuOS6pO+8jOWFtuS9jee9ruWFs+ezu+aciTXnp43vvIzlpoLlm77miYDnpLrvvJo8YnI+PGltZyB3aWR0aD0zNjggaGVpZ2h0PTgxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNTgvOEMvckJBQ0UxTjV4Y0d5cGk1NEFBQWFmU0MwY1g0MTk1LnBuZyIgYWx0PemdkuaenOWtpumZoj48YnI+5YiZ5Lqk54K555qE5Liq5pWw5pyJMeS4qu+8jOaIljPkuKrvvIzmiJY05Liq77yM5oiWNeS4qu+8jOaIljbkuKouIDxicj7mlYXpgIlELiA=
本课配套习题挑战模式5/5
单选题
难度系数:
5.平面上有N条直线,交点多于1个,并且其中任何2条直线均不重合,那么这N条直线至少有()个交点
A: n个 |
B: n+1个 |
C: n-1个 |
D: 1个 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOiuqW4tMeadoemDveW5s+ihjO+8jOeEtuWQjuiuqeesrG7mnaHlkozliY3pnaLlubPooYznm7Tnur/pg73nm7jkuqTkuIDmrKHjgII=
- 答案:Qw==
6L+b6L+H5Yqo5omL5pON5L2c57uY5Zu+77yM5aaC5Zu+5omA56S677yM5Y+v5b6Xbi0x5Liq5Lqk54K544CC562U5qGI5Li6Q+OAgjxicj48aW1nIHdpZHRoPTM3NiBoZWlnaHQ9MjM2IHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMUMvOEUvckJBQ0ZGTjV4YktqWWRkQkFBQVBtSEduUTU0MDUxLnBuZyI+