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Angle Analysis (Posted on 2014-09-05) Difficulty: 2 of 5
Consider a rectangular piece of paper whose respective length and width are 5√2 and 5.

Use paper folding alone to find the value of tan 22.5o.

No Solution Yet Submitted by K Sengupta    
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Solution based on previous Comment 1 of 1
I previously showed how to subdivide a length into any number of equal lengths.

Doing this we can create a strip of width 1.

Then bisect a corner this strip to get a 45 angle and then mountain fold to bisect again for a 22.5 angle. 

A triangle is formed with legs 1 and tan 22.5
  Posted by Jer on 2014-09-06 00:24:51
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