# Measuring angle of paper folded

Discussion in 'Math' started by RRITESH KAKKAR, Jan 2, 2016.

Not open for further replies.
1. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89
A square piece of paper was folded into a pentagon in the following way:
First we fold the square in a way so that the vertices B and D would go into one point laying on the diagonal AC (see picture 2).
Then we fold the resulting quadrilateral in a way so that point C would go into point A (see picture 3.)
What is the measure of the angle with the question mark?

Apr 16, 2011
250
82
112.5 degrees is correct.

3. ### jpanhalt AAC Fanatic!

Jan 18, 2008
5,699
909
Is this a puzzle we are supposed to solve without divulging the answer? Or, are you asking how to derive the correct answer? Or, just wondering what the correct answer is? Or, is this just something interesting that you want to share with the rest of us?

Please give us some direction as to the purpose of this post.

John

Jun 26, 2012
2,391
1,051