How to convert a perfect square into a rectangle of the same area simply by
dividing it into two pieces? Which technique should be employed for this
dissection?
It is required to dissect an obtuse triangle into acute triangles only.
The first question is whether it is possible at all? If the answer is
"Yes", then the next question would be "How?"
Cut the diamond along the lines in such a way
that: you have six identical pieces (they can be rotated/mirrored);
you have six pieces of the same area but differently shaped.
Nine coins. Placed in a square they form eight rows of three coins each.
Theory states they can form more rows of three coins. How to get it in
practice?
