In a mathematics class, the teacher explains the concept of symmetry. He/she finds that using a butterfly as an example is best for demonstrating: (a) Line symmetry (b) Rotational symmetry (c) Transformational geometry (d) Congruence Choose the correct option:

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.