Question

Which of the following constructions can be accomplished with paper folding?

Check all that apply.

A. Drawing a line through a given point parallel to a given line
B. Drawing a perpendicular line segment through a given point on a given segment
C. Constructing a line segment of length 2 and then finding the midpoint
D. Drawing a perpendicular line segment from a given point to a given segment

Answer 1

Hint:
an interesting link that helps:
http://www.cut-the-knot.org/pythagoras/PaperFolding/index.shtml

If you are a visual person, try:
https://www.youtube.com/watch?v=RwqO8Gv-cvc