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A,B,C are points of circle with centre O. BO is bisector of

2007-01-07 22:30:20 · 1 answers · asked by MANDY 1 in Science & Mathematics ➔ Mathematics

1 answers

The symmetry which leaves BO invariant also leaves the circle invariant and exchanges the lines AB and AC. Therefore it exchanges B and C. Since it is an isometry, AB=AC.

2007-01-08 04:16:23 · answer #1 · answered by gianlino 7 · 1⤊ 0⤋

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