I am stuck on a geometry construction and proof.
Construct a line which intersects two circles at chords of equal length.
You are given two circles (center point included) of different sizes and asked to construct a line going through the interior of both of them. The line segments made by the intersection of the line and the circles must be equal in length.
A compass and straightedge is allowed.
On your proof if your theorems are not commonly known please add a link to definition or write it out. :)
I also love khan academy vids on proofs.