BAC = 180° - 135° = 45°
A + B = 180° - 45° = 135°
4 + 5 = 9
B = 9 * 4 = 36°
C = 9 * 5 = 45°
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BAC = 180° - 135° = 45°
A + B = 180° - 45° = 135°
4 + 5 = 9
B = 9 * 4 = 36°
C = 9 * 5 = 45°