BC ao a radius draw a circle. Let CD be the position of the shadow in the afternoon when its extremity just touches the circumference. BC = CD. Join B, D and draw the perpendicular bisector of BD. This is the required meridian line. 'Cantor I, p. 513ff;... A History of the Teaching of Elementary Geometry: With Reference to Present ... - Stran 40 avtor: Alva Walker Stamper - 1909 - 163 strani Celotni ogled -
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