Given that O is the outer center of △ ABC, e is the inner point of triangle, and OE = OA + ob + OC, it is proved that AE is perpendicular to BC

Given that O is the outer center of △ ABC, e is the inner point of triangle, and OE = OA + ob + OC, it is proved that AE is perpendicular to BC

∵ o is the outer center of △ ABC, the line OA = ob = OC, the adjacent edges of OB and OC are used as rhombic obfc, connected with of, then of ⊥ BC, and the vector of is vector ob + vector OC; ∵ the known vector OE = vector OA + vector ob + vector OC, ∵ vector OE = vector OA + vector of, and in △ OAE, the vector OE = vector OA + vector AE, ∵ vector AE = direction