清冽之泉

Test 三角形

Revision as of 15:24, 23 September 2025 by Mwroot (talk | contribs) (Created page with "<!doctype html> <meta charset="utf-8"> <!-- 等边三角形：边长用 100 单位，高度 = 100 * sqrt(3)/2 ≈ 86.60254 --> <svg viewBox="0 0 100 86.60254037844386" style="display:block; width:200px; height:auto;" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="等边三角形"> <polygon points="50,0 100,86.60254037844386 0,86.60254037844386" fill="#3498db"/> </svg>")
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<!doctype html> <meta charset="utf-8"> <svg viewBox="0 0 100 86.60254037844386" 

    style="display:block; width:200px; height:auto;"
    xmlns="http://www.w3.org/2000/svg"
    role="img" aria-label="等边三角形">
 <polygon points="50,0 100,86.60254037844386 0,86.60254037844386"
          fill="#3498db"/>

</svg>

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