本课配套习题挑战模式1/5
单选题
难度系数:
1.如果等腰三角形的的底角为50°,那么它的顶角为( )
A: 50° |
B: 60° |
C: 70° |
D: 80° |
一次做对,真牛!
+5奖励规则>
- 提示1:55Sx5bey55+l562J6IWw5LiJ6KeS5b2i55qE5LiA5Liq5bqV6KeS5pivNTDCsO+8jOWIqeeUqOetieiFsOS4ieinkuW9oueahOaAp+i0qOW+l+WPpuS4gOS4quW6leinkuS5n+aYrzUwwrA=
- 提示2:57uT5ZCI5LiJ6KeS5b2i5YaF6KeS5ZKM5a6a55CG5Y+v5rGC6aG26KeS55qE5bqm5pWw77yO
- 答案:RA==
6Kej77ya4oi15LiJ6KeS5b2i5piv562J6IWw5LiJ6KeS5b2i77yMPGJyPuKItOS4pOS4quW6leinkuebuOetie+8jDxicj7iiLXnrYnohbDkuInop5LlvaLnmoTkuIDkuKrlupXop5LmmK81MMKw77yMPGJyPuKItOWPpuS4gOS4quW6leinkuS5n+aYrzDCsO+8jDxicj7iiLTpobbop5LnmoTluqbmlbDkuLoxODDCsC01MMKwLTUwwrA9ODDCsO+8jjxicj7mlYXpgIlE77yO
本课配套习题挑战模式2/5
单选题
难度系数:
2.
一个等腰三角形的两边长分别是3和7,则三角形的周长是( )
A: 17 |
B: 15 |
C: 13 |
D: 13或17 |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+5Zug5Li66L655Li6M+WSjDfvvIzmsqHmmI7noa7mmK/lupXovrnov5jmmK/ohbDvvIzmiYDku6XmnInkuKTnp43mg4XlhrXvvIzpnIDopoHliIbnsbvorqjorro8L3A+
- 答案:QQ==
PHA+6Kej77ya5YiG5Lik56eN5oOF5Ya177yaPGJyPuW9kzPkuLrlupXml7bvvIzlhbblroPkuKTovrnpg73kuLo377yMM+OAgTfjgIE35Y+v5Lul5p6E5oiQ5LiJ6KeS5b2i77yM5ZGo6ZW/5Li6MTfvvJs8YnI+5b2TM+S4uuiFsOaXtu+8jOWFtuWug+S4pOi+ueS4ujPlkow377yMMyszPTbvvJw377yM5omA5Lul5LiN6IO95p6E5oiQ5LiJ6KeS5b2i77yM5pWF6IiN5Y6777yMPGJyPuaJgOS7peetieiFsOS4ieinkuW9oueahOWRqOmVv+S4ujE377yOPGJyPuaVheWhqzE377yOPC9wPg==
本课配套习题挑战模式3/5
单选题
难度系数:
3.等腰三角形的一个外角等于100°,则与它不相邻的两个内角的度数分别为( )
A: 40° 40° |
B: 80° 20° |
C: 50° 50° |
D: 50° 50°或80°20° |
一次做对,真牛!
+5奖励规则>
- 提示1:5YWI5rGC5Ye65LiO6L+Z5Liq5aSW6KeS55u46YK755qE5YaF6KeS55qE5bqm5pWw
- 提示2:5YaN5qC55o2u562J6IWw5LiJ6KeS5b2i5Lik5bqV6KeS55u4562J5YiG5oOF5Ya16K6o6K665rGC6Kej
- 答案:RA==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.在等腰三角形ABC中,AB=AC,其周长为20cm,则AB的取值范围是( )
A:1cm<AB<4cm |
B: 5cm<AB<10cm |
C: 4cm<AB<8cm |
D: 4cm<AB<10cm |
一次做对,真牛!
+5奖励规则>
- 提示1:6K6+QUI9QUM9eO+8jOWImUJDPTIwLTJ477yM5qC55o2u5LiJ6KeS5b2i55qE5LiJ6L655YWz57O75Y2z5Y+v5b6X5Ye657uT6K66
- 答案:Qg==
6Kej77ya4oi15Zyo562J6IWw5LiJ6KeS5b2i5Lit77yMQUI9QUPvvIzlhbblkajplb/kuLoyMGNtPGJyPuKItEFCPUFDPXhjbe+8jOWImUJDPe+8iDIwLTJ477yJY208YnI+4oi0PGltZyB3aWR0aD04MyBoZWlnaHQ9NjIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GQS8xMy9yQkFDRkZVX1BvT2hCd0xJQUFBQ3cxVzlraXM3NjgucG5nIj48YnI+6Kej5b6XNWNt77yceO+8nDEwY208YnI+4oi06YCJQg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.已知△ABC的周长为13,且各边长均为整数,那么这样的等腰△ABC有( )
A: 5个 |
B: 4个 |
C: 3个 |
D: 2个 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5LiJ6KeS5b2i5Lik6L655LmL5ZKM5aSn5LqO56ys5LiJ6L6577yM5Lik6L655LmL5beu5bCP5LqO56ys5LiJ6L65
- 提示2:57uT5ZCI6L656ZW/5piv5pW05pWw6Kej562U
- 答案:Qw==
6Kej77ya5ZGo6ZW/5Li6MTPvvIzovrnplb/lj6rog73mnInkuInnp43mg4XlhrUzLDUsNeWSjDQsNCw15oiWNiw2LDE=