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What's the size of angle x?

Whats The Size Of Angle X class=

Sagot :

51 is the correct answer becouse this x is correspond angle.

Angle X= 129
Because of the parallel lines, the angle opposite angle 51 is also 51.
The bottom angles opposite each other are also 51.
51+51=102
360-102= 258
258 divided by 2 = 129