幾何圖形與尺規(guī)作圖

2-2垂直、平分與線對(duì)稱圖形能理解平面圖形線對(duì)稱的意義。能理解單一圖形透過(guò)格子點(diǎn)做出線對(duì)稱的鏡射圖形。能認(rèn)識(shí)對(duì)稱點(diǎn)、對(duì)稱線段、對(duì)稱角、對(duì)稱軸。能做出線對(duì)稱圖形。能利用線對(duì)稱性質(zhì)說(shuō)明等腰三角形兩底角相等。能利用線對(duì)稱性質(zhì)及平角180度說(shuō)明等腰三角形的頂角平分線垂直平分底邊。2-2垂直、平分與線對(duì)稱圖形能理解平面圖形線對(duì)稱的意義。2-1生活中的平面圖形主題一垂直與平分主題二線對(duì)稱的意義主題三對(duì)稱軸2-1生活中的平面圖形主題一垂直與平分主題一垂直與平分垂直的意義、名詞與記法主題一垂直與平分垂直的意義、名詞與記法主題一垂直與平分線段的平分、角的平分主題一垂直與平分線段的平分、角的平分主題一垂直與平分線段的平分、角的平分主題一垂直與平分線段的平分、角的平分主題一垂直與平分摺紙活動(dòng)主題一垂直與平分摺紙活動(dòng)主題一垂直與平分主題一垂直與平分主題一垂直與平分主題一垂直與平分主題二線對(duì)稱的意義剪紙活動(dòng)主題二線對(duì)稱的意義剪紙活動(dòng)主題二線對(duì)稱的意義線對(duì)稱圖形、對(duì)稱軸、對(duì)稱點(diǎn)、對(duì)稱角、對(duì)稱線段主題二線對(duì)稱的意義線對(duì)稱圖形、對(duì)稱軸、對(duì)稱點(diǎn)、對(duì)稱角、對(duì)主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段的中垂線主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段主題二線對(duì)稱的意義菱形摺紙活動(dòng)主題二線對(duì)稱的意義菱形摺紙活動(dòng)主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段的中垂線主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段的中垂線主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段的中垂線主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段的中垂線主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段的中垂線主題二線對(duì)稱的意義線對(duì)稱圖形的對(duì)稱軸為任兩對(duì)稱點(diǎn)連接線段主題三對(duì)稱軸主題三對(duì)稱軸主題三對(duì)稱軸主題三對(duì)稱軸主題三對(duì)稱軸主題三對(duì)稱軸幾何圖形與尺規(guī)作圖幾何圖形與尺規(guī)作圖幾何圖形與尺規(guī)作圖幾何圖形與尺規(guī)作圖幾何圖形與尺規(guī)作圖幾何圖形與尺規(guī)作圖幾何圖形與尺規(guī)作圖幾何圖形與尺規(guī)作圖幾何圖形與尺規(guī)作圖幾何圖形與尺規(guī)作圖