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ǰλãҳ > 2017朝阳区初三数学一模试题答?- 百度文库
֤֪AEF=90㣬EF=AE.
ߡACB=90㣬
AEC+BEF=AEC+DAE=90. BEF=DAE. BE=AD EBFաADE DE=BF
29.⣺1٣-3-151.
-622-2. y=x-4y=-x-4. 2-5m-11m5
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