Question

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53:49
If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x + 10) degrees, what is the value of x?

2 lines intersect to form 4 angles. From top left, clockwise, the angles are 1, 4, 3, 2.
50
55
60
100
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Answer 1

50

Vertical (opposite) angles are equal, so 2x + 10 = 110 → 2x = 100 → x = 50.