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The image shows a square with side lengths \(x\), and an inner geometric figure with two right angles. The right triangles have sides labeled \(12\), \(3\), and \(9\), forming a zigzag shape. The goal is to determine the value of \(x\).

We can break this down step by step:

### Step 1: Analyzing the Shape
- The square has a diagonal line that connects two corners of the square. This diagonal is made up of two segments that involve right triangles.
- The right triangles involved are key to calculating the overall length of the diagonal.

### Step 2: Using the Pythagorean Theorem
For the diagonal of the square, we can apply the Pythagorean theorem on the individual right triangles.

1. **For the first triangle:**
   - One leg is 12, and the other leg is 9.
   - Using the Pythagorean theorem:
   \[
   \text{Diagonal}_1 = \sqrt{12^2 + 9^2} = \sqrt{144 + 81} = \sqrt{225} = 15
   \]

2. **For the second triangle:**
   - One leg is 3, and the other leg is 12.
   - Applying the Pythagorean theorem again:
   \[
   \text{Diagonal}_2 = \sqrt{12^2 + 3^2} = \sqrt{144 + 9} = \sqrt{153} \approx 12.37
   \]

### Step 3: Total Diagonal of the Square
- Since these two right triangles form parts of the diagonal, the sum of these two diagonals should give us the total diagonal of the square:
\[
\text{Total Diagonal} = 15 + 12.37 \approx 27.37
\]

### Step 4: Relating Diagonal to Side Length of the Square
For a square, the diagonal can also be related to the side length \(x\) using the formula:
\[
\text{Diagonal} = x\sqrt{2}
\]
Therefore, we set this equal to the total diagonal calculated earlier:
\[
x\sqrt{2} = 27.37
\]

### Step 5: Solving for \(x\)
Now, solve for \(x\):
\[
x = \frac{27.37}{\sqrt{2}} \approx \frac{27.37}{1.414} \approx 19.37
\]

Thus, the side length \(x \approx 19.37\).

Would you like more details or have any questions?

Here are five related questions:
1. How does the Pythagorean theorem work in right triangles?
2. Can you explain the relationship between the diagonal and side length of a square?
3. What other methods could be used to solve for the side length of the square?
4. How would the problem change if the inner angles were not right angles?
5. What is the significance of the square root of 2 in the diagonal formula?

**Tip:** Always check if you can break a complex geometric figure into simpler shapes like triangles to apply basic formulas like the Pythagorean theorem.

What is the value of x in the diagram with a square and right triangles?

In this problem, we use the Pythagorean theorem to find the side length (x) of a square, given right triangles with side lengths of 12, 9, and 3. Learn how to calculate the diagonal and solve for x with a step-by-step breakdown of the solution.

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