Answer:
Polygons are congruent when they have the same number of sides, and all corresponding sides and interior angles are congruent.
Congruent shapes are always similar , but similar shapes are usually not congruent - one is bigger and one is smaller. In congruent shapes, the ratio of the corresponding sides is 1:1.
1. C
2. NC
3. NC
4. NC
5. NC
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