
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In the diagram, $m\|n$. What is the number of degrees in $\angle XYZ$? [asy]
draw((-.4,-.4)--(2,2)--(2,-.4));
draw((-.5,0)--(3,0),Arrows);
draw((-.5,1)--(3,1),Arrows);
draw((1.9,0)--(1.9,.1)--(2,.1));
label("$X$",(1,1),NNW);
label("$Y$",(2,2),N);
label("$Z$",(2,1),NE);
label("$m$",(3,1),E);
label("$n$",(3,0),E);
label("$120^{\circ}$",(1,1),SSE);
[/asy]

Present the answer in LaTex format: \boxed{Your answer}
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