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Answered by
1
Answer:
155°
Step-by-step explanation:
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Answered by
0
Answer:
30°+50°+55°+angle D =360°
as the sum of all angles of a quadrilateral is 360°
angle D= 225
angle D + x° = 360°
supplementary angles
x°=360°-225°
x°=135°
hope it HELPS you
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