If lines A, B, C, D, E, F, G are drawn perpendicular to a common baseline such that line AA' is perpendicular to the base, BB' is perpendicular to the base, and GG' is also perpendicular to the base, which lines are parallel to each other?

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.