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| 1. |
Proove that the length of tangents draw from an external point are equal in length |
| Answer» 1st step: take a point p outside the circle and and name the point A & B where it touches the circle.2nd step: join OA and OB as a radius from the circle.3rd step : join OP.4th step: now congruent the triangles OPA and OPB by RHS criterian. Hence, by c.p.c.t. AP and BP are equal. | |