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Mathematical aec
Solution: the perpendicular line DE and BC on the side of ∵AB intersect at point E, and the vertical foot is D.

∴AE=BE (the distance from a point on the middle vertical line to both ends of the line segment is equal)

∵△ The circumference of ∵△ABC is 24cm, and AB= 10cm.

∴ac+bc=24cm- 10cm= 14cm

∫AE+ECBE+EC = BC

∴ The perimeter of the triangle AEC is:

AE+EC+AC=BC+AC= 14cm

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