x | ... | -3 | -2 | -1 | 0 | 1 | 2 | 3 | ... |
y | ... |
( 1 ) 將△ABC向左平移5個(gè)單位得到△A1B1C1 , 并寫(xiě)出點(diǎn)A1的坐標(biāo);
( 2 )將△ABC繞原點(diǎn)O逆時(shí)針旋轉(zhuǎn)90°后得到△A2B2C2 , 并寫(xiě)出點(diǎn)B2的坐標(biāo);