We are given that $\overline{CA}$ bisects $\angle BAD$ and $\overline{CA}$ bisects $\angle BCD$. We need to prove that $\triangle ABC \cong \triangle ADC$.

GeometryCongruenceTrianglesAngle BisectorASA Congruence
2025/3/10

1. Problem Description

We are given that CA\overline{CA} bisects BAD\angle BAD and CA\overline{CA} bisects BCD\angle BCD. We need to prove that ABCADC\triangle ABC \cong \triangle ADC.

2. Solution Steps

Step 1: CA\overline{CA} bisects BAD\angle BAD and CA\overline{CA} bisects BCD\angle BCD. (Given)
Step 2: BACDAC\angle BAC \cong \angle DAC and BCADCA\angle BCA \cong \angle DCA. (Definition of angle bisector)
Step 3: ACAC\overline{AC} \cong \overline{AC}. (Reflexive Property)
Step 4: ABCADC\triangle ABC \cong \triangle ADC. (ASA Congruence)

3. Final Answer

ABCADC\triangle ABC \cong \triangle ADC

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