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OpenStudy (lisa2345):
These few questions are hard :/
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OpenStudy (lisa2345):
OpenStudy (muddahamburglar):
17. A
OpenStudy (muddahamburglar):
18 B.
OpenStudy (lisa2345):
how do you know?
OpenStudy (muddahamburglar):
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OpenStudy (muddahamburglar):
it needs to add up to 180
OpenStudy (lisa2345):
what's 19?
OpenStudy (muddahamburglar):
19. 180-170= 10
OpenStudy (lisa2345):
thank you
OpenStudy (muddahamburglar):
do you understand it though?
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OpenStudy (muddahamburglar):
https://www.mathsisfun.com/geometry/supplementary-angles.html if not this will help you
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