Exercises on Euclid and in modern geometry for the use of schools, private students, and junior university students (1881)
McDowell, James L · Cambridge, Deighton, Bell, and Co. · leaf 184
Fig. i, Fig. 2, 156 EXERCISES ON EUCLID [191*. Let 0 be the centre of the given circle, B, C the points ofcontact of the fixed tangents which meet in A, and P the point ofcontact of the variable tangent BE. Then shall the intercept BEsubtend at the centre an angle equal to half the angle…
Geometry
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