Geometric Inspection of Complex Numbers Small 320×312 Medium 640×625 Large 1024×1000 Download Tiff Original 2400×2343 | (483.7 KB) Description Illustration showing complex numbers with a modulus equal to unity. The lines representing these numbers terminate in points lying on the circumference of a circle whose radius is unity. Keywords analytic geometry, complex number, DeMoivre's theorem Galleries Analytical Geometry Source: George N. Bauer, PH.D. and W.E. Brooke, C.E., M.A. Plane And Spherical Trigonometry (Boston: D.C. Heath & Co., 1917) 115