I am sure we have all seen photos like the one to the left. They have been made famous at locations like the Eiffel Tower and the Leaning Tower of Pisa. This is called perspective photography and it makes an optical illusion where one does not exist. This little girl is not actually reaching to the top of the point, but it looks like she does because of her distance from the Tower. Using given information, is there a way for us to figure out just how tall the little girl is?
What if I were to tell you that the Eiffel Tower is 1,063 feet from bottom to tip and that the little girl was standing 1/2 mile away. (2,640 ft) With this information, you would be able to give a fairly solid estimate about her height.
What if I also told you that the photographer was 8 feet away from the little girl and that the two triangles made by the photographer and the little girl and the girl and the Tower are similar right triangles. Would you be able to then find her exact height?
Eiffel Tower Image: https://digital-photography-school.com/forced-perspective/