高中數學主題練習—求內角平分線長

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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/7ff09643-63d7-4e50-93f2-7fdfce2ed4ca.png" data-src="https://resize-image.vocus.cc/resize?compression=6&norotation=true&url=https%3A%2F%2Fimages.vocus.cc%2F7ff09643-63d7-4e50-93f2-7fdfce2ed4ca.png&width=740&sign=eiAU4GGImXyzEHe2OGRt523-MycX3w09PL7P7vsogQU" class="lazy" data-loaded="false" data-original-src="https://images.vocus.cc/7ff09643-63d7-4e50-93f2-7fdfce2ed4ca.png" data-lowquality="false" data-width="743" data-height="969" 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><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/ab100664-0509-4e5b-ae49-9e5e2ff45707.png" data-src="https://resize-image.vocus.cc/resize?compression=6&norotation=true&url=https%3A%2F%2Fimages.vocus.cc%2Fab100664-0509-4e5b-ae49-9e5e2ff45707.png&width=740&sign=qdrdnxNzOisECNFattTMBwWdcyHOSfXLwu1_E57Qwvk" class="lazy" data-loaded="false" data-original-src="https://images.vocus.cc/ab100664-0509-4e5b-ae49-9e5e2ff45707.png" data-lowquality="false" data-width="930" data-height="622" 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><p class="graf--p" dir="ltr"><br></p></div></body></html>

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求內角平分線長（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%2F7ff09643-63d7-4e50-93f2-7fdfce2ed4ca.png&amp;width=740&amp;sign=eiAU4GGImXyzEHe2OGRt523-MycX3w09PL7P7vsogQU" fetchpriority="high" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F7ff09643-63d7-4e50-93f2-7fdfce2ed4ca.png&amp;width=740&amp;sign=eiAU4GGImXyzEHe2OGRt523-MycX3w09PL7P7vsogQU" data-loaded="true" data-original-src="https://images.vocus.cc/7ff09643-63d7-4e50-93f2-7fdfce2ed4ca.png" data-lowquality="false" data-width="743" data-height="969" 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><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%2Fab100664-0509-4e5b-ae49-9e5e2ff45707.png&amp;width=740&amp;sign=qdrdnxNzOisECNFattTMBwWdcyHOSfXLwu1_E57Qwvk" fetchpriority="high" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fab100664-0509-4e5b-ae49-9e5e2ff45707.png&amp;width=740&amp;sign=qdrdnxNzOisECNFattTMBwWdcyHOSfXLwu1_E57Qwvk" data-loaded="true" data-original-src="https://images.vocus.cc/ab100664-0509-4e5b-ae49-9e5e2ff45707.png" data-lowquality="false" data-width="930" data-height="622" 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"><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>