Math Problem Statement

Cho tam giác ABC, AD,BE,CF là 3 đường cao, H là trực tâm của tam giác. CMR : AE/EC + AF/AB = AC/AG (dùng định lý Thales)

Solution

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Math Problem Analysis

Mathematical Concepts

Triangle geometry
Thales' theorem
Altitudes in triangles
Centroid

Formulas

-

Theorems

Thales' theorem

Suitable Grade Level

High school