Determine the value of x in the diagram below when lines a and b are parallel. at
(2x - 5)
b
(x + 20°
25°
15°
0 000
75°
55°

The measures of the angles in △abc are given by the expressions in the table. angle measure angle a 65° angle b (3x−10)° angle c (2x)∘ find the value of x. then find the m∠b and m∠c.