2019高考地理必考知識(shí)點(diǎn):經(jīng)緯網(wǎng)應(yīng)用方法-定球面上的對(duì)稱點(diǎn)
2018-12-10 17:11:54學(xué)科網(wǎng)
定球面上的對(duì)稱點(diǎn)
(1)關(guān)于赤道對(duì)稱的兩點(diǎn):經(jīng)度相同,緯度相反,數(shù)值相等。如圖中A點(diǎn)(40°N,20°W)與B點(diǎn)(40°S,20°W)關(guān)于赤道對(duì)稱。
(2)關(guān)于地軸對(duì)稱的兩點(diǎn):經(jīng)度相對(duì),和為180°;緯度相同,如圖中A點(diǎn)(40°N,20°W)與C點(diǎn)(40°N,160°E)關(guān)于地軸對(duì)稱。
(3)關(guān)于地心對(duì)稱的兩點(diǎn)(對(duì)跖點(diǎn)):經(jīng)度相對(duì),和為180°,緯度相反,數(shù)值相等,如圖中A點(diǎn)(40°N,20°W)與D點(diǎn)(40°S,160°E)關(guān)于地心對(duì)稱。