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OpenStudy (anonymous):
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OpenStudy (anonymous):
OpenStudy (anonymous):
First option 39 degree
OpenStudy (anonymous):
Reasoning: As per the given names of the two triangles, the correspondence of the vertices is : Q <----> P S <----> K and C <----> N Therefore, angleP = angleQ = 63 deg
OpenStudy (anonymous):
By angle sum property of triangle angleP + angleK + angleN = 180 deg this means 63 deg + 78deg + angleN = 180 deg i.e. 141 deg + angleN = 180 deg So angleN = 180deg - 141 deg = 39 deg
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