alleryAll circles are
ACongruent only if radii are equal
BAlways similar to each other
CAlways congruent to each other
DNever similar unless radii are equal
Answer & Solution
Correct answer: B. Always similar to each other
1. Any two circles have the same shape (round).
2. They differ only by scale (radius), which is the definition of similarity.
3. So all circles are always similar.
_Source: syllabus Mathematics, Ch 6 "Triangles", §6.2_
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