Final answer:
Similar shapes must have corresponding sides that are congruent (the same length).
Step-by-step explanation:
True. Similar shapes have corresponding sides that are congruent in length. This means that the sides of the two shapes have the same measurement. For example, if you have two triangles that are similar, their corresponding sides will be proportional in length. If one side of a triangle is 5 units long and the corresponding side of the other triangle is 10 units long, then the ratio of the lengths is 1:2.
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