Question

Which of the following problems cannot be solved using similar triangles?

A. Show that the slope of a line is independent of the points chosen.
B. A scale model of a town park includes a triangular garden with legs measuring 3 and 4 inches. Find the actual length of the second leg of the garden if the first leg is 12 ft.
C. A 10-ft tall flagpole stands next to a tree. The shadow of the flagpole is 17 ft and the shadow of the tree is 50 ft. What is the height of the tree?
D. Your friend walks 10 yards down the street and then turns 45 degrees to the right and walks another 15 yards. If you walk directly from your friend's start point to their finish point, how far will you have walked?

Answer 1

This one is hard to explain but basically three of them can be solved by creating two triangles and setting up some sort of proportion to find the missing info

Like for B you can set up one triangle with legs 3 and 4 inches and a similar triangle with leg 12 feet and find out what the missing leg on the big triangle is

So not B

Between A, C , and D any ideas which one cannot be solved using this method?