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
Given that the hypotenuse of the isosceles right triangle = 14 , ⇒ the length of each leg = 14 √ 2 = 7 √ 2 Check : ( 7 √ 2 ) 2 + ( 7 √ 2 ) 2 = 196 = 14 2 (OK)