Pairs 1 &2 are not similar whereas pairs 3&4 are similar.
The term "similarities" refers to pairs of objects whose corresponding sides have the same ratio. When two figures, such as the rectangles A and B, are given:
length A/length B equals width A/width B
We enter the values of the pairs in the formula above to determine which pairs are similar:
Pair 1
169/1.3=130
49/0.7=70
130 ≠70
therefore the first pair is not similar
Pair 2
18.55/5.3=3.5
10.5/3.5=3
Pair 2 is not similar
Pair 3
120/24=5
60/12=5
this implies that pair 3 is similar
Pair 4
189/2.1=90
81/0.9=90
this means that pair 4 is similar.
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