國中 解答

直角△ ABC 中,斜邊 AB = 20 ,求直角 ABC 的外接圓半徑。

鈍角三角形的外心在三角形哪個位置?

直角三角形的外心在三角形哪個位置?

任一三角形的三條中線會相交於一點,此點稱為三角形的

任一三角形的三內角角平分線會相交於一點,此點稱為三角形的

任一三角形的三邊中垂線會相交於一點,此點稱為三角形的

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在直角三角形ABC中,若,則下列哪一個角為直角?