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Mathematics 9 Online
OpenStudy (sphott51):

Find the value of x. I'll draw below

OpenStudy (sphott51):

|dw:1424231610188:dw|

OpenStudy (michele_laino):

Please there is a theorem which states that "an external angle of a triangle, is congruent with the sum of the other two internal angles not adjacent to that external angle", so you have to solve this equation: 105 = 72 + x

OpenStudy (sphott51):

33?

OpenStudy (michele_laino):

that's right!

OpenStudy (sphott51):

Oh... that's it? lol

OpenStudy (michele_laino):

yes!

OpenStudy (sphott51):

Thanks lol

OpenStudy (michele_laino):

thanks!

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