A.) if d is a right angle and lines pn, fg, and bd are parallel to each other, prove
spn  sfg  sbd .
b.) use the diagram to solve this practical problem:
a person who is 1.5 m tall casts a shadow of 8 m. the distance along the ground from the person (n) to the flagpole (g) is 32 m, and the distance from the flagpole (g) to the building (d) is 200 m. find the height of the flagpole (fg) and the height of the building (bd), showing all calculations.