To find the cale factor....we just need to compare the lengths of similar sides of Figure 2 and Figure 1
Look at the base of Figure 2..its length = 2
Look at the base of Figure 1.....its length = 4
So....the scale factor is
Length of base of Figure 2 2 1
_______________________ = _____ = _____
Length of base of figure 1 4 2
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