Question

What additional information is needed in order to conclude that the given
quadrilateral is a parallelogram?

17.G,I,E,V
18F,O,R,U.
19.B,T,S,E
20W,H,A,I.
21.A,E,H,C
22.M,A,H,T
​

Answer 1

Step-by-step explanation:

when both pairs of opposite sides are parallel

or

if both pairs of opposite sides of a quadrilateral are congruent

then that quadrilateral can be known as parallelogram