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Answer:

tomorrow i will do it i am buzy

Answer:

x° = 90°

3x° = 270°

Step-by-step explanation:

45° + 135° + x° + 3x° + 135° + 45° = 720° ( sum of the interior ∠s of hexagon)

4x° = 720° - 135° - 135° - 45° - 45°

4x° = 360°

x° = 360°/4 = 90°

therefore, 3x° = 3*90 = 270°