The figure below is called a pantograph. A pantograph is an expandable device used in the television industry to position lighting and other equipment. In the
photo, points D, E, F, and G are the vertices of a parallelogram. Parallelogram
DEFG is one of many parallelograms that change shape as the pantograph
extends and retracts. Use the figure to answer the following questions.

If DE = 2.5 ft, what is FG? How do you know? If the measure of angle E is 129
degrees, what is the measure of angle G? How do you know? What happens to
the measure of angle D as the measure of angle E increases or decreases?
Explain.