點(diǎn)P(2,3)與點(diǎn)P′關(guān)于原點(diǎn)成中心對(duì)稱(chēng),則P′的坐標(biāo)為   
【答案】分析:根據(jù)關(guān)于原點(diǎn)對(duì)稱(chēng)的點(diǎn)的坐標(biāo)特點(diǎn):兩個(gè)點(diǎn)關(guān)于原點(diǎn)對(duì)稱(chēng)時(shí),它們的坐標(biāo)符號(hào)相反,即點(diǎn)P(x,y)關(guān)于原點(diǎn)O的對(duì)稱(chēng)點(diǎn)是P′(-x,-y)可直接寫(xiě)出答案.
解答:解:∵點(diǎn)P(2,3)與點(diǎn)P′關(guān)于原點(diǎn)成中心對(duì)稱(chēng),
∴P′的坐標(biāo)為(-2,-3),
故答案為:(-2,-3).
點(diǎn)評(píng):此題主要考查了原點(diǎn)對(duì)稱(chēng)的點(diǎn)的坐標(biāo)特點(diǎn),關(guān)鍵是熟練掌握點(diǎn)的變化規(guī)律.
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