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歡迎您訪問數學考題練習:下列各項中是軸對稱圖形,而且對稱軸最多的是!

數學考題練習:下列各項中是軸對稱圖形,而且對稱軸最多的是

更新時間:2024-01-12 16:32:56作者:貝語網校

下列各項中是軸對稱圖形,而且對稱軸最多的是

A.等腰梯形

B.等腰直角三角形

C.等邊三角形

D.直角三角形

試題答案

C

試題解析

根據軸對稱圖形的概念:如果一個圖形沿著一條直線對折后兩部分完全重合,這樣的圖形叫做軸對稱圖形,這條直線叫做對稱軸.據此作答.

解答:A、等腰梯形是軸對稱圖形,有一條對稱軸;

B、等腰直角三角形是軸對稱圖形,有一條對稱軸;

C、等邊三角形是軸對稱圖形,有三條對稱軸;

D、直角三角形不一定是軸對稱圖形.

則對稱軸最多的是等邊三角形.

故選C.

點評:考查了軸對稱圖形的概念.軸對稱圖形的關鍵是尋找對稱軸,圖形兩部分折疊后可重合.同時要熟記一些常見圖形的對稱軸條數.

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