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Mathematics 45 Online
OpenStudy (alibaby):

Which relationship is always true for the angles r, x, y, and z of triangle ABC? x + z = y 180 degrees − x = r x + y + z = 180 degrees x + y + z = 90 degrees

OpenStudy (alibaby):

OpenStudy (phi):

can you "rule out" any of the choices ?

OpenStudy (alibaby):

wdym

OpenStudy (phi):

are any of the choices not the answer ?

OpenStudy (phi):

the other way to find the answer is to notice that a straight line is 180 degrees in other words, x+r add up (form) a straight line

OpenStudy (alibaby):

b? @phi

OpenStudy (phi):

yes

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