एक समांतर चतुर्भुज ABCD में, आसन्न कोण ∧A = 2θ + 40° और ∧B = θ + 50° हैं। ∧C का माप ज्ञात कीजिए।

One diagonal of a parallelogram is 50 cm, and the perpendicular distance from any opposite vertex to this diagonal is 25 cm. Find the total area of the parallelogram (in cm2).

In a quadrilateral IJKL, ∠I = 36° and ∠J = 44°. The internal angle bisectors of ∠K and ∠L intersect at a point Z. What is the measure of ∠LZK?