Math Problem Statement

cho abcd là tứ giác có ad băngd dc dươngd chéo ac là phân giác góc a chứng minh abcd là hình thang

Solution

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Math Problem Analysis

Mathematical Concepts

Geometry
Quadrilaterals
Trapezoids
Angle Bisector

Formulas

-

Theorems

Angle Bisector Theorem
Properties of Trapezoids

Suitable Grade Level

Grades 8-10