14-11-2020
Mathematics

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Please can someone help quickly

Please can someone help quickly class=

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rohleom rohleom

14-11-2020

((5-2)*180)/5=SPT
SPT=108
360-(108+90)=RPT
RPT=162
((n-2)*180)/n=162
162n=(n-2)*180
.9n=n-2
.1n=2
n=20

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