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折り紙Origami 五角形の簡単な折り方・作り方動画origami pentagon

<p>定理 正五角形の一辺と対角線との比は、黄金比に等しい。<&sol;p>&NewLine;<p>正五角形の交わる対角線は、互いに他を黄金比に分ける。<&sol;p>&NewLine;<p>対角線の長さが互いに全て等しい正多角形は、正五角形と正四角形&lpar;正方形&rpar;のみである。<&sol;p>&NewLine;<div class&equals;"lkc-external amp"><table border&equals;"1" cellspacing&equals;"0" cellpadding&equals;"4"><tr><td><br><a href&equals;"https&colon;&sol;&sol;ja&period;wikipedia&period;org&sol;wiki&sol;&percnt;E4&percnt;BA&percnt;94&percnt;E8&percnt;A7&percnt;92&percnt;E5&percnt;BD&percnt;A2" target&equals;"&lowbar;blank" rel&equals;"external noopener">五角形 - Wikipedia<&sol;a>&nbsp&semi;-&nbsp&semi;<&sol;td><&sol;tr><&sol;table><&sol;div>&NewLine;<p><span class&equals;"embed-youtube" style&equals;"text-align&colon;center&semi; display&colon; block&semi;"><amp-youtube data-videoid&equals;"UUx9HsAMziI" data-param-rel&equals;"1" data-param-showsearch&equals;"0" data-param-showinfo&equals;"1" data-param-iv&lowbar;load&lowbar;policy&equals;"1" data-param-fs&equals;"1" data-param-hl&equals;"ja" data-param-autohide&equals;"2" data-param-wmode&equals;"transparent" width&equals;"1256" height&equals;"707" layout&equals;"responsive"><a href&equals;"https&colon;&sol;&sol;www&period;youtube&period;com&sol;watch&quest;v&equals;UUx9HsAMziI" placeholder><amp-img src&equals;"https&colon;&sol;&sol;i&period;ytimg&period;com&sol;vi&sol;UUx9HsAMziI&sol;hqdefault&period;jpg" alt&equals;"YouTube ポスター" layout&equals;"fill" object-fit&equals;"cover"><noscript><img src&equals;"https&colon;&sol;&sol;i&period;ytimg&period;com&sol;vi&sol;UUx9HsAMziI&sol;hqdefault&period;jpg" loading&equals;"lazy" decoding&equals;"async" alt&equals;"YouTube ポスター"><&sol;noscript><&sol;amp-img><&sol;a><&sol;amp-youtube><&sol;span><&sol;p>&NewLine;<blockquote>&NewLine;<p>折り紙Origamiの五角形Pentagonの簡単な折り方、作り方を紹介します。<&sol;p>&NewLine;<p>&lpar;AbcOrigami&rpar;<&sol;p>&NewLine;<&sol;blockquote>&NewLine;<p> <&sol;p>&NewLine;<h2>【実用おりがみ】10枚の折り紙で作る五角形フタ付きの箱<&sol;h2>&NewLine;<p><span class&equals;"embed-youtube" style&equals;"text-align&colon;center&semi; display&colon; block&semi;"><amp-youtube data-videoid&equals;"nMgL5qzTXBI" data-param-rel&equals;"1" data-param-showsearch&equals;"0" data-param-showinfo&equals;"1" data-param-iv&lowbar;load&lowbar;policy&equals;"1" data-param-fs&equals;"1" data-param-hl&equals;"ja" data-param-autohide&equals;"2" data-param-wmode&equals;"transparent" width&equals;"1256" height&equals;"707" layout&equals;"responsive"><a href&equals;"https&colon;&sol;&sol;www&period;youtube&period;com&sol;watch&quest;v&equals;nMgL5qzTXBI" placeholder><amp-img src&equals;"https&colon;&sol;&sol;i&period;ytimg&period;com&sol;vi&sol;nMgL5qzTXBI&sol;hqdefault&period;jpg" alt&equals;"YouTube ポスター" layout&equals;"fill" object-fit&equals;"cover"><noscript><img src&equals;"https&colon;&sol;&sol;i&period;ytimg&period;com&sol;vi&sol;nMgL5qzTXBI&sol;hqdefault&period;jpg" loading&equals;"lazy" decoding&equals;"async" alt&equals;"YouTube ポスター"><&sol;noscript><&sol;amp-img><&sol;a><&sol;amp-youtube><&sol;span><&sol;p>&NewLine;<p> <&sol;p>&NewLine;&NewLine;&NewLine;

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