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Answered by
0
Answer:
Step-by-step explanation:
90degree+60degree+40degree+x=360degree
=90+60+40=190
=360-190
=170degree Ans.
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Answered by
2
Answer:
90+90+60+40+x=540
Step-by-step explanation:
280x=540
x=540-280
x=260 °
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