利用正多边形顶角的计算公式,得到:
(a-2)π/a + (b-2)π/b + (c-2)π/c = 2π
=>1 - 2/a + 1 - 2/b + 1 - 2/c = 2
=>1 = 2(1/a+1/b+1/c)
=>1/a + 1/b + 1/c = 1/2
这是可能实现的,例如a=4 b=6 c=12
利用正多边形顶角的计算公式,得到:
(a-2)π/a + (b-2)π/b + (c-2)π/c = 2π
=>1 - 2/a + 1 - 2/b + 1 - 2/c = 2
=>1 = 2(1/a+1/b+1/c)
=>1/a + 1/b + 1/c = 1/2
这是可能实现的,例如a=4 b=6 c=12