问题:
(1)如图,已知∠1=∠2,DE⊥AB,DF⊥AC,垂足分别为E、F,则DE______DF.
(2)已知DE⊥AB,DF⊥AC,垂足分别为E、F,且DE=DF,则∠1______∠2.
(1)如图,已知∠1=∠2,DE⊥AB,DF⊥AC,垂足分别为E、F,则DE______DF.
(2)已知DE⊥AB,DF⊥AC,垂足分别为E、F,且DE=DF,则∠1______∠2.
(2)已知DE⊥AB,DF⊥AC,垂足分别为E、F,且DE=DF,则∠1______∠2.
参考答案: