Firstly,we need to understand the properties of a parallelogram:
-Opposite sides are parallel by .
-Opposite sides are congruent.
-Opposite angles are congruent.
-The diagonals bisect each other.
Therefore in this case:
XW must be congruent to YZ.
WZ must be congruent to XY.
Hope it helps!
Answer:
the line is making a kite like shape
Make use of the known limit,

We have

since
, and the limit of a product is the same as the product of limits.
is continuous at
, and
. The remaining limit is also 1, since

so the overall limit is 1.
Point two one nine, however, decimals below 1 usually have a zero before the decimal point.