根据勾股定理,AB^2+BD^2=AD^2,
AD^2=AE^2+DE^2,
BD=CD,
AB^2+CD^2=AE^2+DE^2,
DE^2=CD^2-CE^2,
AB^2+CD^2=AE^2+CD^2-CE^2,
∴AB^2+CE^2=AE^2.
根据勾股定理,AB^2+BD^2=AD^2,
AD^2=AE^2+DE^2,
BD=CD,
AB^2+CD^2=AE^2+DE^2,
DE^2=CD^2-CE^2,
AB^2+CD^2=AE^2+CD^2-CE^2,
∴AB^2+CE^2=AE^2.