摘要:△ABC是⊙O内接三角形.∠BOC=80°.那么∠A等于A.80° B.40° C.140° D.40°或140°

网址:http://m.1010jiajiao.com/timu_id_669422[举报]

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网