The first six books of the elements of Euclid : with a commentary and geometrical exercises ; to which are annexed a treatise on solid geometry, and short essays on ancient geometrical analysis, and the theory of transversals (1861)
Lardner, Dionysius, 1793-1859 · London : Print. for Taylor and Walton · leaf 136
118 ELEMENTS OF EUCLID. *^* (395) Tangents through the extremities of the same chordmake equal angles with it on the same side. For each angle is equalto the angle in the alternate segment. *** (396) The chord joining the points of contact of parallel tan-gents is a diameter. For the angles on the…
Geometry
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