All the ________ in a plane are similar

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{"content":[{"content":[{"marks":[{"type":"bold"}],"text":"Step 1 (Definition of Similarity):","type":"text"},{"type":"text","text":" Two geometric figures are similar if they have the same shape, even if they have different sizes. This means one can be obtained from the other by scaling (and possibly rotation or translation)."}],"type":"paragraph"},{"type":"paragraph","content":[{"marks":[{"type":"bold"}],"text":"Step 2 (Circles in a Plane):","type":"text"},{"type":"text","text":" Every circle is completely determined by a single parameter: its radius. Changing the radius scales the circle but preserves its perfect circular shape. Therefore, any two circles in a plane can be scaled to match each other perfectly, meaning all circles are similar."}]},{"content":[{"marks":[{"type":"bold"}],"text":"Step 3 (Conclusion):","type":"text"},{"text":" The blank is filled by ","type":"text"},{"marks":[{"type":"bold"}],"text":"circles","type":"text"},{"text":" (or ","type":"text"},{"marks":[{"type":"bold"}],"text":"squares","type":"text"},{"type":"text","text":"). The most standard geometric term is "},{"type":"text","marks":[{"type":"code"}],"text":"circles"},{"text":".","type":"text"}],"type":"paragraph"}],"type":"doc"}

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