Question

1) Parallelogram is a ............. quadrilateral ? a) concave b) convex c) regular d) open​

Answer 1

Answer:

C) regular ...............

Answer 2

Answer:

regular

Step-by-step explanation:

By comparison, a quadrilateral with just one pair of parallel sides is a trapezoid in American English or a trapezium in British English. The three-dimensional counterpart of a parallelogram is a parallelepiped