يادداشت
منابع: 1-Bold, Benjamin, famous problems of mathematics. A history of construction With Straight Edge and Compasses, Van Nostrand Reinhold (1969). , 2- Moise, Edwin. E., Elementary Geometry from an advanced Stanpoint. Addison Wesley (secod edition, 1964). , 3- Niven, I., Irrational Numbers (Carus Monographs). , 4- Seigel, C. L., Transcendetal Numbrs (Princeton, University press)
