/c?m=9d78d513d9d430aa4f9995697b12c0151f4381137d94c7150e87c35f93151b03506692eb763657448dca262147ed5e5d99ed2b37605f79f08cc8ff1a8ee0c46f388850652d439b0549845cb2ca4d74c225c00becfc4ae5b8a03593fd83878e51029951566d8087d11c5f4a&p=8b2a910c999c0eff57e6953b135e&user=baidu&fm=sc&query=%C7%F3%D6%A4sq%A1%ACab%2Crp%A1%CEbc&qid=867719c019e1aa1c&p1=1
證明△ads∽△abr