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Liula [17]
4 years ago
6

Given: mORP = 80°

Mathematics
2 answers:
sineoko [7]4 years ago
7 0
The Correct answer would be A.
vaieri [72.5K]4 years ago
5 0
We know that
A linear pair <span>is a pair of adjacent angles formed when two lines intersect.
</span>The two angles of a linear pair are always supplementary , which means their measures add up to 180°
so
ORP and ORN are a linear pair
mORP+ mORN <span>= 180°
</span>80°+ (3x + 10)°=180°
3x=180°-90°
x=90°/3
x=30°

therefore

the answer is the option 
A. ORP and ORN are a linear pair
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