Elements of geometry, containing books I and II with exercises and notes (1882)
Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : Gage · leaf 12
e or moreboundaries. Book I.] DEFlAiTWXS. 5 ^^ XIII. A Circle is a plane figure contained by one line,-which is called the Circumference, and is such, that allstraight lines drawn to the circumference from a certain point(called the Centre) -within the figure are equal to oneanother. XIV. Any… … > Thus, in the diagram, 0 is the centre of the circle ABCDyOA, OB, OC, OD are Radii of the circle, and the straight lineAOD is a Diameter. Hence the radius of a circle is half thediameter. XVI. A Semicircle is the figure contained by a diameteiand the part of the circumference cut off by the…
Geometry
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