For the line segment whose in points arex(1,2) and y(6,7), find the x-coordinate for the point located 1/3 distance from x to y

You are assembling pieces of an iron gate to complete a fence. the finished gate will look like the one below. in order to assemble the gate it is important to under how the pieces are related. part 1: how are pies 1 and 2 in the archway related? part 2: how are the rectangular sections 5 and 6 in the center of the gate related to each other?

Ill mark the brainliest if you me with the these three questions 7,8,9

Which geometric principle is used to justify the construction below?