A line is 180°. If we subtract 180° by 124° we get 56° as our missing angle as <x.
Since <x and <Z are vertical angles, they are equal meaning since <x is 56°, so is <z.
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Answer : 56°
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I hope that helps you out!!
Any more questions, please feel free to ask me and I will gladly help you!!
~Zoey
