In ∆PQR, QR=7.5cm, ∠QPR=110° and PQ+PR=8.3cm then construct ∆PQR and measure ∠PQR. Construct its circumcircle.
In the adjoining figure, AD is the bisector of the exterior angle A of triangle ABC. Seg AD intersects the side BC produced in D. Prove that: BD/CD=AB/AC.
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