Posted by **Oscar** on Tuesday, March 9, 2010 at 7:43am.

if line m is parallel to line n and is cut by a transversal and angle 4 =3x - 20 and angle 5 = x + 40, what is the value of x?

- Math -
**drwls**, Tuesday, March 9, 2010 at 8:04am
Where are the angles 4 and 5 in question? Are their values 4 and 5 degrees? Or is "Angle 4 and Angle 5" just the way they are labeled?

The four inside angles formed when parallel lines are cut by a traversal are supplementary pairs.

Thus, perhaps,

(3x -20) + (x +40) = 180

4x = 160

x = 40

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