Elementary plane geometry : inductive and deductive / by Alfred Baker (1903)
Baker, Alfred, 1848-1942 · Toronto : Gage · leaf 105
angle75% and placing them across the circle so as to betangents to it. To assume that we can construct thetangent to a circle by laying the ruler against it andso drawing a line, is equivalent to assuming that wecan lay off a right angle, using only the judgment ofthe eye. It will be well to… … 120, since 105+ 135 +120°= 360\ Draw lines (tangents)at A, B and C at right anglesto the radii. Since the angles of a quadrilateral make up fourright angles, and the- angles at A and C are rightangles, therefore AOC +AEC = 180. But AOC is 135°. 102 Geometry. Therefore AEC is 45% if AOC has been…
Geometry, Plane
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