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29.01.2020 •
Mathematics
An irregular polygon has its external angles as 28°,40°,120°,142° and x. find the value of x
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Ответ:
X=30
Step-by-step explanation:
The whole polygon is 360 degrees so:
360-28-40-120-142=X, which is 30
Ответ:
l 7
l 7
l 7
l 7
__________ 8
(8)squared+b squared=10 squared
64+b=100 subract 64
now fiquere out what sauqered =36
wich is 6 so the last side is 6