What is the area of the shaded region between the two z-scores indicated in the diagram?
a.) 0.6844
b.) 0 6864
c.) 0.7995
d.) 0.1131
e.) 0.1151
z-scores are z=-1.21 and z=0.84

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.