Geometry

Question Analysis:
This question is based on the property of congruent triangles.
The main focus is to understand that corresponding sides, corresponding angles, and areas of congruent triangles have specific relationships.

Key Concept Explanation:
- Corresponding sides and angles of congruent triangles are equal.
- Congruent triangles have equal areas.

Step - by - Step Solution：
1. Since , by the property of congruent triangles, corresponding sides

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