भुजा लंबाई 'a' वाले एक समबाहु त्रिभुज (Equilateral Triangle) का क्षेत्रफल किस सूत्र द्वारा दिया जाता है?

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.