Question

in the following figure find x​

Answer 1

Answer:

140° = x+ x ( by ext. angle property)

140°=2x

140/2 = x

70°= x

Answer 2

Answer:

Step-by-step explanation:

y = 40º (Linear pair with the exterior angle)

x + x + y = 180º  (Angle Sum Property)

2x + 40  = 180

 2x        = 140º

  x          = 70º

Therefore, your answer is 70º

There is also a property which states that the sum of the opposite two angles with respect to the angle next to exterior angle is equal to the exterior angle.

since x and x are opposite to y:

70 + 70 = 140 = exterior angle

Hope this helps...