The three interior angles of ΔABC taken in order are in the ratio 3 : 4 : 5. If side AB is extended to a point X past B, what is the measure of the exterior angle ∠CBX?

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.