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Determine angle $PST$.
Mathematics 0580 · IGCSE · Angles
Angles — practice question
PQRS forms a quadrilateral, while RST lies on a straight line. The diagram marks the angles as follows: at R = 73^{\circ}, at Q = 129^{\circ}, and at P = 75^{\circ}. The points are labelled P, Q, R, S, T. NOT TO SCALE.