The 4 angle of a quadrilateral are in arithmetic sequence. The smallest angle is 30find the largest angle
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Answer:
150
Step-by-step explanation:
30+30+x+30+2x+30+3x=360
120+6x=360
6x=360-120
6x=240
x=40
largest angle 30+3x
so 30+3×40=150
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