如图,∠1=∠2,AB=AD,AC=AE.请将下面说明∠C=∠E的过程和理由补充完整. ![](http://tikupic.21cnjy.com/7c/cd/7ccd528f167e9b9ef0b59bf6825fa058.png)
证明:∵∠1=∠2({#blank#}1{#/blank#} ),
∠1+{#blank#}2{#/blank#}=∠2+{#blank#}3{#/blank#}
即∠BAC={#blank#}4{#/blank#}.
在△ABC和△ADE中,
AB=AD(已知),
{#blank#}5{#/blank#},
AC=AE(已知),
∴{#blank#}6{#/blank#}({#blank#}7{#/blank#})
∴∠C=∠E({#blank#}8{#/blank#})