Update index.html

Author: Gmac4247

index.html

@@ -2610,15 +2610,11 @@ <h4>Archimedes and the Illusion of Limits</h4>
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-But that claim depends on assumptions about curvature that fail once the polygon’s internal angles flatten toward 180°.
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-</summary>
+<summary><h4>But that claim depends on assumptions about curvature that fail once the polygon’s internal angles flatten toward 180°.</h4></summary>
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 <p>A simple physical model exposes this flaw: two rigid plates forming a narrow V, closed by a straight lid that just fits. If we bend that lid into a curve, its ends can slip lower between the plates — even if the lid becomes slightly longer.</p>
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 <p>The curved path fits the same angular span with a greater length. This shows that ‘lying outside’ does not uniquely determine that a path is longer than the corresponding curve.
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@@ -5028,8 +5024,11 @@ <h3 itemprop="eduQuestionType" style="margin:7px">Volume of a Tetrahedron</h3>
 Simplifying equations to ensure consistency and precision.</p>
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-® All rights reserved 2025 Gaál Sándor</p>
+<div itemprop="copyrightHolder" itemscope itemtype="https://schema.org/Person">
+    <span itemprop="name">Gaál Sándor</span>
+    </div>
+<p itemprop="copyrightNotice" style="margin:12px">® All rights reserved</p>
+<p itemprop="copyrightYear" style="margin:12px">2025</p>
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