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OpenStudy (buckybarnes):
Write a paragraph proof of theorem 3–8. In a plane if two lines are perpendicular to the same line then there are parallel to each other.
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OpenStudy (buckybarnes):
OpenStudy (buckybarnes):
@phi
OpenStudy (buckybarnes):
@3mar
OpenStudy (buckybarnes):
@Will.H
OpenStudy (3mar):
One minute, please!
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OpenStudy (buckybarnes):
Take your time
OpenStudy (3mar):
I really thank you for your kindness!
OpenStudy (3mar):
Well, I am here. Sorry for late.
OpenStudy (3mar):
Can we start?
OpenStudy (buckybarnes):
Yes of course
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OpenStudy (3mar):
|dw:1478030449682:dw| Line 2 is normal to line 1, so that the intersection angle is 90 degree (definition or perpendicular line) ok?
OpenStudy (buckybarnes):
Okay
OpenStudy (3mar):
Actually all the four angles forming the intersection are normal angles.
OpenStudy (3mar):
Then |dw:1478030680823:dw| Line 3 is normal to line 1, so that the intersection angle is 90 degree (definition or perpendicular line).
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