Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 217
cut in its center. (11) An arc of acircle is a part of a circle. (12) A quarter circle is, of course,the one-fourth part of a circle. (13) A tangent is a line whichtouches a curve but does not cut it. (14) An ellipse is an ovalfigure, drawn on a plane surface. (15) The equator is a circlewhich… … HORIZONTAL LINE J> (JTH\S LINE REPRESENTSTHE LEVEL SURFACE/ OF THE EARTH o THE ECLIPTIC * V ;A .CIRCLE? AND THE EQUATOR >RC,OR ARC OF CIRCLE
Astronomy · Stars
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