Long description
Lines Ay B and C D are parallel. A transverse line rises through Ay B and C D. At the intersection with Ay B, angle 3 and angle 52 degrees are to the upper left and lower left, respectively. At the intersection with C D, angle 2 and angle 4 are to the upper left and lower left, respectively. A ray begins to the lower right of the intersection of the transverse and line C D. The ray is at a right angle to the transverse, and it extends down and right through Ay B. Angle 1 is to the upper left of its intersection.
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