Grades 9-10 Video Solutions 2025-2025_9-10

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Video Summary

The problem involves finding the area of a large rectangle ABCD by using the given information about two congruent shaded rectangles, each with an area of 4. By analyzing congruent triangles formed within the setup, the solution establishes that the area of triangle ADC is 6. Since the large rectangle ABCD's area is twice that of triangle ADC, its total area is calculated to be 12. Thus, the area of rectangle ABCD is determined to be 12.