∴∠CAD=∠ADE

∫AD average score ∠BAC means ∠CAD=∠DAB.

∴∠ADE=∠DAB

∴AE=DE

Triangle ADB is a right triangle.

∴∠EAD and ∠ABC are complementary, ∠ADE and ∠EDB are complementary.

∴∠EBD=∠EDB

∴BE=DE

∴AE=BE

I hope I can help you, and I hope to adopt it! ! ! ! ! ! !