Hendecagon construction at 8.4E-14

It is my pleasure to post the best accuracy method to constrcution a Hendecagon. the method is a little bit complex but it can reach relative error at 8.4E-14.,as the gift to the year of 2011.

Icosikaitrigon construction at 1.2E-11

It is the best solution for Icosikaitrigon construction.It take tow days to simplify the methid which can be finished in normal compass and straight method.

Enneadecagon construction at 1.6E-11

this is the solution for compass and straight to construct a Enneadecagon with least error at 1.6E-11.

tridecagon construction at error 7.6E-11

It is not a good method but the error is the best one so far. I post here for memory.

Nonagon construction at 92.E-14 (complex version)

This is the first version at error 9.2E-14. it is complex but can have high accuracy. I simply post here for backup.

Nonagon construction with straght and compass at 9.2E-14

It take me four days to find this hyperaccuracy method to construct Nonagon at relative error 9.2E-14. This final version can be drawed normaly by straght and compass.

Nonagon construction with straight and compass at error 1.93E-10

It took me hours to find this simple and clear straight &compass method to build Nonagon. and the relative error is less than 1.93E-10. The most interesting thing is that you only  have 3 numbers,2,5,7. that is surpirse me.

这里的帖子也被删过了

渔夫突然发现，渔夫在这里的备份帖子竟然好多不见了，至少2008年或者以前的帖子统统不见了。联想到这个帐号曾经被黑过，真的是很诧异啊。渔夫只是一个普通的市民，即无名也无利，怎么连这么普通的人也不放过呢？太奇怪了。看来又是组织上一次大规模的活动啊。想想自己真的也是可怜，作为纯粹的纳税人，养活了那么多的公务员，竟然是来删我的帖子的，天下哪有这般道理啊。真实无理到极致了。还好现在还没有来要我的命，如果来要命的话，估计也不得不给了，只是让人家付出多大代价而已。不过，善恶到头终有报，只是来早与来迟。那些参与删我帖子的人，我一定要诅咒你们不得好死，全家遭殃，因为你们做了不应该做的事情，所以一定要受到诅咒的。我诅咒这些删我帖子的人，我诅咒这些让人来删我帖子的人，我诅咒那些组织来删我帖子的人，我诅咒这些人不得好死，全家遭殃，现世报应，立刻报应。我诅咒这些删我帖子的人，我诅咒他们，我诅咒他们不得好死，现世受到报应。我的诅咒会立刻生效的，会马上生效的，那些删我帖子的人会立刻受到报应的，会马上报应的。

A simple method to construct Hendecagon with classic method

I am happy to find a simple and clear method to consutruct hendecagon with hyper accuracy 1E-11,the better way than last one. and the accuracy is even better.