find the x value
please explain
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Answer:
x = 70°
Step-by-step explanation:
In a cyclic quadilateral all the angles sum is equal to 360°
Hence,
2x + (x+20) + x + (180-120)* = 360
*sum of linear pair of angles is equal to 180°
4x + 80 = 360
4x = 360 - 80
4x = 280
∴ x = 70°
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