| 123456789 |
- <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 800 280" role="img" aria-labelledby="title desc">
- <title id="title">环边的替代路线与桥</title><desc id="desc">左侧三角形的任意边有替代路线，连接右侧环的一条边是桥。</desc>
- <style>text{font-family:system-ui,sans-serif;fill:#172033}.edge{stroke:#64748b;stroke-width:5;fill:none}.bridge{stroke:#dc2626;stroke-width:7}.node{fill:#fff;stroke:#2563eb;stroke-width:4}.note{font-size:19px}.label{font-size:24px;font-weight:700}</style>
- <text x="28" y="34" class="note">左边删一条仍可绕环；红边一删，左右两坨再也见不着。</text>
- <path class="edge" d="M105 160 L225 70 L280 210 Z"/><path class="bridge" d="M280 210 L455 170"/><path class="edge" d="M455 170 L570 75 L690 180 Z"/>
- <circle class="node" cx="105" cy="160" r="21"/><circle class="node" cx="225" cy="70" r="21"/><circle class="node" cx="280" cy="210" r="21"/><circle class="node" cx="455" cy="170" r="21"/><circle class="node" cx="570" cy="75" r="21"/><circle class="node" cx="690" cy="180" r="21"/>
- <text class="label" x="96" y="169">A</text><text class="label" x="216" y="79">B</text><text class="label" x="271" y="219">C</text><text class="label" x="446" y="179">D</text><text class="label" x="561" y="84">E</text><text class="label" x="681" y="189">F</text>
- <text x="321" y="238" fill="#dc2626" style="font-family:system-ui,sans-serif;font-size:20px;font-weight:700">桥</text>
- </svg>
|
