of all the triangkes whose all side are integers,how many triangles whose sides are 12 and ( )(1)21 (2)3 (3)17 (4)无数

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of all the triangkes whose all side are integers,how many triangles whose sides are 12 and ( )(1)21 (2)3 (3)17 (4)无数
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of all the triangkes whose all side are integers,how many triangles whose sides are 12 and ( )(1)21 (2)3 (3)17 (4)无数
of all the triangkes whose all side are integers,how many triangles whose sides are 12 and ( )
(1)21 (2)3 (3)17 (4)无数

of all the triangkes whose all side are integers,how many triangles whose sides are 12 and ( )(1)21 (2)3 (3)17 (4)无数
C
三角形两边之和比第三边大,两边之差比第个三边小,所以第三条边的长度是在4到20间的所有整数,共17个边.

这句子有5种翻译结果呢、这.什么脑残题目啊

三角形打错了一个字母呢 Triangle
我选A
a.9 b.10 c.11 d.12
abc abd acd bcd （可以组成三角形） 4
aab aac aad x4 （等腰三角形） 12
aaa x4 (等边三角形） 4
4+1...

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三角形打错了一个字母呢 Triangle
我选A
a.9 b.10 c.11 d.12
abc abd acd bcd （可以组成三角形） 4
aab aac aad x4 （等腰三角形） 12
aaa x4 (等边三角形） 4
4+12+4=20
不晓得忘了哪种情况......
对了 题目翻译是
of all the triangles whose all sides are integers,how many triangles whose sides are 12 and 9?( )
(1)21 (2)3 (3)17 (4)无数
三角形的边取9到12的整数，请问可以组成多少三角形？

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