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

SOLUTION: Yes; one pair of opposite sides are parallel and congruent. From the figure, one pair of opposite sides has the same measure and are parallel. By the definition of congruence, these segments are congruent. By Theorem 6.12 this quadrilateral is a parallelogram.

Below.

Step-by-step explanation:

The definition of a parallelogram is a 4 sided figure  with 2 pairs of oppsoite parallel sides.

One of the properties of a parallelogram is that opposite sides are congruent.

In this figure the opposite sides are both parallel and congruent, so it must be a parallelogram.

Statistical data

Step-by-step explanation:

The data depends on the absenteeism statistics. The data are collected over the week. For instance, a tally of the data for absenteeism will be collected over the course of the week. The number of absent staff is monitored and tracked. The absent staff are then checked and tallied against the days. this can be done for a period, say 4 weeks. In this way, the data will give more or less a true picture of what the trend will be like.