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Geometry problem illustrating angle bisection, where AD bisects angle BAC, and the measure of angle DAC is 22.5°, resulting in angle BAC being 45°.

Diagram showing angle BAC being bisected by AD, with angle DAC measuring 22.5 degrees, and the calculation for angle BAC as 45 degrees.

Diagram showing angle BAC being bisected by AD, with angle DAC measuring 22.5 degrees, and the calculation for angle BAC as 45 degrees.

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