The radii of two concentric circles are 34 cm and 50 cm. A and D are points on the larger circle, and B and C are points on the smaller circle. If ABCD is a straight line and BC = 32 cm, then what is the length of AD?

If B is the center of a circle and lines AD and CD are tangent segments drawn from an external point D, then which of the following classifications apply to quadrilateral ABCD? (a) Kite (b) Cyclic quadrilateral (c) Rhombus (d) Trapezium

In a parallelogram PQRS, rays PA and SA are the angle bisectors of ∠QPS and ∠RSP respectively. Find the measure of ∠PAS.