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Two figures are said to be similar if they have
AThe same shape but not necessarily the same size
BThe same shape and the same size always
CDifferent shapes but the same area
DEqual angles but different ratios of sides
Answer & Solution
Correct answer: A. The same shape but not necessarily the same size
1. Definition: similar figures have the same shape but not necessarily the same size.
2. Congruent figures are similar but the converse is not always true.
3. Hence the correct option says "same shape, not necessarily same size".
_Source: NCERT Class 10 Mathematics, Ch 6 "Triangles", §6.2_
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