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13-02-2019
Mathematics

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prove angle 1 being congruent to angle 4

prove angle 1 being congruent to angle 4 class=

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13-02-2019

we know the two triangles are congruent because BD = BD. Also, AD = CD because it is bisecting AC. Since these triangles are congruent, we know that congruent parts of congruent triangles are congruent, so angle 1 is congruent to angle 4.

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