is constant for all the circles ;show that the tangents at the points of contact of the circles all passthrough P. 21. Two circles touch one another at P and are cut by a third inthe points A, B and C, D respectively. Show th.-it, AB and CI)intersect on the common tangent at P. ROOK V. SIMILAR… … Let ABCDE be the given rectilineal figui-e, and m : nthe given ratio. It is required to construct a figure similar to ABCDE,and having its sides to the corresponding sides of ABCDEin the ratio m : n. Take any point 0; and join OA, OB, OC, OD, OE.Take a line OKK; and let OK contain m nnits oflength,…
Geometry · Geometry, Plane
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