(1).畫(huà)出圖形?.△ABC關(guān)于y軸所在直線對(duì)稱的△A1B1C1,?.△ABC關(guān)于直線OM對(duì)稱的△A2B2C2,(2)填空:下列哪些變換可使△A2B2C2與△A1B1C1重合?答: ①將△A2B2C2以直線ON為對(duì)稱軸進(jìn)行軸對(duì)稱變換. ②將△A2B2C2繞點(diǎn)O順時(shí)針旋轉(zhuǎn)90°.③先將△A2B2C2沿B2B1方向平移B2B1的距離.再將平移得到的三角形繞點(diǎn)B1順時(shí)針旋轉(zhuǎn)90°. 查看更多

 

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如圖,在8×8的正方形網(wǎng)格中,△ABC的頂點(diǎn)均在格點(diǎn)上,點(diǎn)B、點(diǎn)O在直線a上.
(1)畫(huà)出△ABC關(guān)于直線a對(duì)稱的△A1B1C1;
(2)畫(huà)出將△ABC繞點(diǎn)O按逆時(shí)針?lè)较蛐D(zhuǎn)90°所得的△A2B2C2
(3)△A1B1C1與△A2B2C2成軸對(duì)稱嗎?若成軸對(duì)稱,畫(huà)出所有的對(duì)稱軸;
(4)△A1B1C1與△A2B2C2成中心對(duì)稱嗎?若成中心對(duì)稱,指出對(duì)稱中心.

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如圖,在8×8的正方形網(wǎng)格中,△ABC的頂點(diǎn)均在格點(diǎn)上,點(diǎn)B、點(diǎn)O在直線a上.
(1)畫(huà)出△ABC關(guān)于直線a對(duì)稱的△A1B1C1;
(2)畫(huà)出將△ABC繞點(diǎn)O按逆時(shí)針?lè)较蛐D(zhuǎn)90°所得的△A2B2C2;
(3)△A1B1C1與△A2B2C2成軸對(duì)稱嗎?若成軸對(duì)稱,畫(huà)出所有的對(duì)稱軸;
(4)△A1B1C1與△A2B2C2成中心對(duì)稱嗎?若成中心對(duì)稱,指出對(duì)稱中心.
精英家教網(wǎng)

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精英家教網(wǎng)如圖所示的正方形網(wǎng)格紙上,△ABC的頂點(diǎn)均在格點(diǎn)上,請(qǐng)解答下面幾個(gè)問(wèn)題:
(1)畫(huà)出△A1B1C1,使△A1B1C1與△ABC關(guān)于y軸對(duì)稱;畫(huà)出△A2B2C2,使△A2B2C2與△ABC關(guān)于點(diǎn)O中心對(duì)稱;
(2)分別寫出B、B2兩點(diǎn)的坐標(biāo);直線l恰經(jīng)過(guò)B、B2兩點(diǎn),請(qǐng)畫(huà)出直線l,并求出直線l的解析式.

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如圖所示的正方形網(wǎng)格紙上,△ABC的頂點(diǎn)均在格點(diǎn)上,請(qǐng)解答下面幾個(gè)問(wèn)題:
(1)畫(huà)出△A1B1C1,使△A1B1C1與△ABC關(guān)于y軸對(duì)稱;畫(huà)出△A2B2C2,使△A2B2C2與△ABC關(guān)于點(diǎn)O中心對(duì)稱;
(2)分別寫出B、B2兩點(diǎn)的坐標(biāo);直線l恰經(jīng)過(guò)B、B2兩點(diǎn),請(qǐng)畫(huà)出直線l,并求出直線l的解析式.

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如圖所示的正方形網(wǎng)格紙上,△ABC的頂點(diǎn)均在格點(diǎn)上,請(qǐng)解答下面幾個(gè)問(wèn)題:
(1)畫(huà)出△A1B1C1,使△A1B1C1與△ABC關(guān)于y軸對(duì)稱;畫(huà)出△A2B2C2,使△A2B2C2與△ABC關(guān)于點(diǎn)O中心對(duì)稱;
(2)分別寫出B、B2兩點(diǎn)的坐標(biāo);直線l恰經(jīng)過(guò)B、B2兩點(diǎn),請(qǐng)畫(huà)出直線l,并求出直線l的解析式.

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