摺紙 - 拼圖
By Dinah
at 2012-03-11T21:07
at 2012-03-11T21:07
Table of Contents
1 : 2
1 : 1
________________
|╲ | ∕ |
| ╲ |∕ |
| ╲ |
| ∕╲ |
| ∕| ╲ |
| ∕ | ╲ |
| ∕ | ╲ |
|∕ | ╲|
 ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄
1.先折對角線 "╲"
2.折上邊中點到左下角的折線 "∕"
3.這兩條線的焦點就是3等分(三角形的重心將3中線分為2:1)
4.再將這點直"|"的或橫的平行折 就可以將邊長3等分了
不知道大家看不看得懂@@
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拼圖
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By Doris
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