The number of diagonals that can be drawn in a regular polygon with21:00前要,如果有算式要列算式!+_+是The number of diagonals that can be drawn in a regular polygon withtwenty sides(icosagon) is___________.
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Thenumberofdiagonalsthatcanbedrawninaregularpolygonwith21:00前要,如果有算式要列算式!+_+是Thenumberofdiagonalstha
The number of diagonals that can be drawn in a regular polygon with21:00前要,如果有算式要列算式!+_+是The number of diagonals that can be drawn in a regular polygon withtwenty sides(icosagon) is___________.
The number of diagonals that can be drawn in a regular polygon with
21:00前要,如果有算式要列算式!+_+
是The number of diagonals that can be drawn in a regular polygon withtwenty sides(icosagon) is___________.
The number of diagonals that can be drawn in a regular polygon with21:00前要,如果有算式要列算式!+_+是The number of diagonals that can be drawn in a regular polygon withtwenty sides(icosagon) is___________.
一个正多边形内能画的对角线的数目
前提n>=3,正多边形对角线数目(n*(n-3))/2
*表示乘
OK?
任意俩点之间有一连线
再减去边数就行了
n是顶点数:
n*(n-1)/2-n=n*n/2-3*n/2
a number of the number of
the number of,a small number of,a number of.
the number of造句
the number of造句
the reciprocal of number
the number of中文
the number of 是什么意思?
the number of同义词
The number of students
Number of the black
the number of、a number of、large number的区别
翻译the system of number
The total number of 中文
the number of的用法
a number of the students
What’s the number of
The number of errors( )surprising
the number of revolutions是什么意思?