如图,AOB是一条直线,∠AOD=BOD=EOC=90°,∠BOC:∠AOE=3:1.(1)求∠如图,AOB是一条直线,∠AOD=BOD=EOC=90°,∠BOC:∠AOE=3:1. (1)求∠COD的度数. (2)图中有哪几对角互为余角? (3) 图中有哪几
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![如图,AOB是一条直线,∠AOD=BOD=EOC=90°,∠BOC:∠AOE=3:1.(1)求∠如图,AOB是一条直线,∠AOD=BOD=EOC=90°,∠BOC:∠AOE=3:1. (1)求∠COD的度数. (2)图中有哪几对角互为余角? (3) 图中有哪几](/uploads/image/z/3766736-56-6.jpg?t=%E5%A6%82%E5%9B%BE%2CAOB%E6%98%AF%E4%B8%80%E6%9D%A1%E7%9B%B4%E7%BA%BF%2C%E2%88%A0AOD%EF%BC%9DBOD%EF%BC%9DEOC%EF%BC%9D90%C2%B0%2C%E2%88%A0BOC%3A%E2%88%A0AOE%EF%BC%9D3%3A1.%EF%BC%881%EF%BC%89%E6%B1%82%E2%88%A0%E5%A6%82%E5%9B%BE%2CAOB%E6%98%AF%E4%B8%80%E6%9D%A1%E7%9B%B4%E7%BA%BF%2C%E2%88%A0AOD%EF%BC%9DBOD%EF%BC%9DEOC%EF%BC%9D90%C2%B0%2C%E2%88%A0BOC%3A%E2%88%A0AOE%EF%BC%9D3%3A1.+%EF%BC%881%EF%BC%89%E6%B1%82%E2%88%A0COD%E7%9A%84%E5%BA%A6%E6%95%B0.+%EF%BC%882%EF%BC%89%E5%9B%BE%E4%B8%AD%E6%9C%89%E5%93%AA%E5%87%A0%E5%AF%B9%E8%A7%92%E4%BA%92%E4%B8%BA%E4%BD%99%E8%A7%92%3F+%EF%BC%883%EF%BC%89+%E5%9B%BE%E4%B8%AD%E6%9C%89%E5%93%AA%E5%87%A0)
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