Since line t is a transversal line all angle which are perpendicular with 63 will equal to the same value (63) and also line m is a straight line where it’s total will be 180
So, 3x + 2x + 63 = 180 5x + 63 = 180 5x = 180 - 63 5x = 117 Divide by 5 throughout X = 23.4degrees