círculo SVG
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TC5550
<svg width="100" height="100">
<circle cx="50%" cy="50%" r="10" fill="red"/>
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<svg width="100" height="100">
<circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow" />
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<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<circle cx="50" cy="50" r="50"/>
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<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'>
<circle cx="50" cy="50" r="50"/>
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