Opposite angles in a parallelogram are equal, assuming you are following the convention of listing vertices in order, then
4x-17 = 2x+19
2x = 36
x = 18
so angle R = 55°
then angle T = 180-55 = 125°
In parallelogram TRIG, m∠R = 2x + 19 and m∠G = 4x - 17.
What is m∠T
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