Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 133
27. The radius of a sphere is aline drawn from the centre to anypoint of the circumference. Thus,CA is a radius. … 28. The diameter of a sphere isa line passing through the centre,and terminated by the circumferonce. Thus. AD is a diameter
Geometry · Plane trigonometry
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