is this quadrilateral a parallelogram?If yes, state the definition or theorem that justifies your answer.​

What is the value of x in the diagram below?

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

16 more than the product of 5 and p