
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
A circle touches one of the legs of an isosceles right triangle and passes through the vertex of the opposite acute angle. Find the radius of the circle if its center lies on the hypotenuse of the triangle, and the leg of the triangle is equal to \(a\).

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