'Ferdinand von Lindemann proved the problem of "squaring" this with compass & ruler was impossible'
the circle
PROBLEMS, PROBLEMS: Ferdinand von Lindemann proved the problem of squaring this with compass & ruler was impossible
Ferdinand von Lindemann proved the problem of "squaring" this with compass & ruler was impossible
Ferdinand von Lindemann proved the problem of "squaring" this with compass & ruler was impossible
PROBLEMS, PROBLEMS
the circle
PROBLEMS, PROBLEMS