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The given diagram consists of a square with side lengths of 1 unit, and the task is to determine the area of the shaded region. To solve this problem, let's proceed step by step:

### Step 1: Understanding the Geometry
- The square has side lengths \( AB = BC = CD = DA = 1 \) unit.
- The lines \( AC \) and \( BD \) are diagonals of the square, which divide the square into triangular regions.
- The point \( M \) appears to be the midpoint of \( AB \), and two lines are drawn from the points \( D \) and \( C \) intersecting at a point inside the square, forming the shaded region.

### Step 2: Identifying Key Triangles
We need to focus on the triangles involved. Specifically, the diagonals of the square divide it into four smaller triangles. The shaded triangle lies at the intersection of lines from \( D \) to \( M \) and from \( C \) to \( A \).

### Step 3: Applying Symmetry and Calculating Areas
The diagonals \( AC \) and \( BD \) divide the square into four equal triangles. Since the square’s total area is \( 1 \) square unit, each of these triangles has an area of:
\[
\text{Area of one triangle} = \frac{1}{2} \times 1 \times 1 = \frac{1}{2} \text{ square units}.
\]
The shaded region appears to be a smaller triangle within one of these sections. By symmetry and the properties of triangles, the area of the shaded region can be calculated as a fraction of the area of the larger triangles.

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I will now compute the exact area of the shaded region based on the geometry of the square and the lines.The area of the shaded region is approximately \( \frac{1}{12} \) square units, or \( 0.0833 \) square units.

Would you like further details or have any questions about the solution? Here are 5 related questions for deeper exploration:

1. How would the area change if the side length of the square were doubled?
2. Can you calculate the area of the entire triangle formed by the points \( D \), \( M \), and \( B \)?
3. What geometric properties allow us to divide the square symmetrically?
4. How can you generalize this method to find areas in larger polygons?
5. How would the shaded area change if \( M \) were not the midpoint of \( AB \)?

**Tip:** When working with symmetrical shapes like squares, leveraging symmetry helps simplify complex geometry problems.

Diberikan persegi dengan panjang sisi 1 satuan seperti berikut, tentukan luas daerah yang diarsir.

Learn how to calculate the shaded area in a square with side lengths of 1 unit, intersected by diagonals. This problem covers key geometry concepts, including symmetry, area calculation of triangles, and properties of diagonals. Suitable for students in Grades 8-10.

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