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歡迎您訪問(wèn)數(shù)學(xué)考題練習(xí):如圖:順次連接矩形A1B1C1D1四邊的中點(diǎn)得!

數(shù)學(xué)考題練習(xí):如圖:順次連接矩形A1B1C1D1四邊的中點(diǎn)得

更新時(shí)間:2024-01-12 14:01:50作者:貝語(yǔ)網(wǎng)校

如圖:順次連接矩形A1B1C1D1四邊的中點(diǎn)得到四邊形A2B2C2D2,再順次連接四邊形A2B2C2D2四邊的中點(diǎn)得四邊形A3B3C3D3,…,按此規(guī)律得到四邊形AnBnCnDn.若矩形A1B1C1D1的面積為24,那么四邊形AnBnCnDn的面積為_(kāi)_______.

試題答案

試題解析

根據(jù)矩形A1B1C1D1面積、四邊形A2B2C2D2的面積、四邊形A3B3C3D3的面積,即可發(fā)現(xiàn)新四邊形與原四邊形的面積的一半,找到規(guī)律即可解題.

解答:順次連接矩形A1B1C1D1四邊的中點(diǎn)得到四邊形A2B2C2D2,則四邊形A2B2C2D2的面積為矩形A1B1C1D1面積的一半,

順次連接四邊形A2B2C2D2四邊的中點(diǎn)得四邊形A3B3C3D3,則四邊形A3B3C3D3的面積為四邊形A2B2C2D2面積的一半,

故新四邊形與原四邊形的面積的一半,

則四邊形AnBnCnDn面積為矩形A1B1C1D1面積的,

∴四邊形AnBnCnDn面積=的×24=,

故答案為.

點(diǎn)評(píng):本題考查了學(xué)生找規(guī)律的能力,本題中找到連接矩形、菱形中點(diǎn)則形成新四邊形的面積為原四邊形面積的一半是解題的關(guān)鍵.

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