三角形打靶 --- 介绍 ---

一个三角形有四个``心'': 重心、垂心、内心、外心.

如果你觉得自己很熟悉这四个``心'', 试一试这个练习/游戏. 给出一个三角形, 你要做的是射击它的``心''(在图片上单击), 或者相反, 给出三角形的两个顶点以及它的一个``心'', 你要做的是找到它的另一个顶点.

请注意: WIMS 的网页是交互式的: 它们不是通常的 HTML 文件. 只能在线交互地 使用. 您用自动化程序收集的网页是无用的.

• Description: 点出三角形的中心. This is the main site of WIMS (WWW Interactive Multipurpose Server): interactive exercises, online calculators and plotters, mathematical recreation and games
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