高中數學主題練習—求割線段長

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               padding: 1px 0.25rem;                font-family: Menlo, Consolas, Monaco, monospace;                font-size: 94%;              }            </style></head><body><div class="article-container"><div class="graf--img center"><div class="lexical__imageWrapper"><img src="https://images.vocus.cc/d663af8c-8e60-47d6-b645-94614d2242aa.png" data-src="https://resize-image.vocus.cc/resize?compression=6&norotation=true&url=https%3A%2F%2Fimages.vocus.cc%2Fd663af8c-8e60-47d6-b645-94614d2242aa.png&width=740&sign=RO45M4rtikiVUlexgxAsgN8ai7TKTlZ3Dp7K1kMT5-g" class="lazy" data-loaded="false" data-original-src="https://images.vocus.cc/d663af8c-8e60-47d6-b645-94614d2242aa.png" data-lowquality="false" data-width="1166" data-height="1226" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="false" alt="raw-image"></div><div></div></div><p class="graf--p"><br></p><hr><h2 class="graf--h2" dir="ltr"><span style="white-space: pre-wrap;">解答：</span></h2><div class="graf--img center"><div class="lexical__imageWrapper"><img src="https://images.vocus.cc/e29a449b-a175-4b29-9615-7632d2ea595b.png" data-src="https://resize-image.vocus.cc/resize?compression=6&norotation=true&url=https%3A%2F%2Fimages.vocus.cc%2Fe29a449b-a175-4b29-9615-7632d2ea595b.png&width=164&sign=8EAbKHgYjg94H7XUTCL5CyE-T2RAYujsocb_S16ahvY" class="lazy" data-loaded="false" data-original-src="https://images.vocus.cc/e29a449b-a175-4b29-9615-7632d2ea595b.png" data-lowquality="false" data-width="164" data-height="508" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="false" alt="raw-image"></div><div></div></div><p class="graf--p"><br></p><p class="graf--p" dir="ltr"><br></p><p class="graf--p" dir="ltr"><br></p><p class="graf--p" dir="ltr"><br></p></div></body></html>

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高中數學主題練習—過圓外一點之切線

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求割線段長（一）

<div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fd663af8c-8e60-47d6-b645-94614d2242aa.png&amp;width=740&amp;sign=RO45M4rtikiVUlexgxAsgN8ai7TKTlZ3Dp7K1kMT5-g" fetchpriority="high" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fd663af8c-8e60-47d6-b645-94614d2242aa.png&amp;width=740&amp;sign=RO45M4rtikiVUlexgxAsgN8ai7TKTlZ3Dp7K1kMT5-g" data-loaded="true" data-original-src="https://images.vocus.cc/d663af8c-8e60-47d6-b645-94614d2242aa.png" data-lowquality="false" data-width="1166" data-height="1226" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="true" alt="raw-image"></div><div></div></div><p class="lexical__paragraph"><br></p><hr><h2 class="lexical__h2" dir="ltr"><span style="white-space: pre-wrap;">解答：</span></h2><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fe29a449b-a175-4b29-9615-7632d2ea595b.png&amp;width=164&amp;sign=8EAbKHgYjg94H7XUTCL5CyE-T2RAYujsocb_S16ahvY" fetchpriority="high" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fe29a449b-a175-4b29-9615-7632d2ea595b.png&amp;width=164&amp;sign=8EAbKHgYjg94H7XUTCL5CyE-T2RAYujsocb_S16ahvY" data-loaded="true" data-original-src="https://images.vocus.cc/e29a449b-a175-4b29-9615-7632d2ea595b.png" data-lowquality="false" data-width="164" data-height="508" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="true" alt="raw-image"></div><div></div></div><p class="lexical__paragraph"><br></p><p class="lexical__paragraph" dir="ltr"><div class="ad-placeholder" style="min-height: 124px;"></div><br></p><p class="lexical__paragraph" dir="ltr"><br></p><p class="lexical__paragraph" dir="ltr"><br></p>