B2 - 12a when a = 1/4 and b = 8

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?

What two criteria are needed for triangles to be similar

What is the value of x in the diagram below?