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.If x and 3x, (x + 15) and (2x + 30) are the angles of a quadrilateral, find them. Please answer my question step by step my exams are coming soon :)

Answer»

ANSWER:

X is 45°

Step-by-step EXPLANATION:

Sum of all interior ANGLES of qua. = 360°

x° + 3x° + x° + 15° + 2x° + 30° = 360°

7x° + 45° = 360°

7x° = 360° - 45°

7x° = 315°

x° = 315°/7

x° = 45°



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