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The problem asks to find the measure of the angle ∠CFD, using square pattern blocks as a reference. 

Looking at the diagram:

1. The shape is a rectangle \( ABCD \), and point \( F \) is marked at the bottom center of the rectangle.
2. Points \( D \), \( C \), and \( F \) form the angle \( \angle CFD \), which is located at point \( F \) between lines \( CF \) and \( DF \).
3. Since \( ABCD \) is a rectangle, we can infer that the angles formed at each corner are right angles (90°). Additionally, the line segments \( FG \) and \( FA \) divide the rectangle symmetrically in half.

To compute \( \angle CFD \):
- Since the lines \( CF \) and \( DF \) meet at the center \( F \) of a rectangle, and the rectangle is divided symmetrically, the angle \( \angle CFD \) is **90 degrees**.

Therefore, the measure of \( \angle CFD \) is 90°.

Would you like further clarification, or have any questions about this solution?

Here are 5 related questions for further exploration:
1. What are the properties of angles within a rectangle?
2. How does symmetry in geometric shapes help solve for unknown angles?
3. What is the sum of interior angles in a quadrilateral?
4. How can we divide a rectangle into smaller geometric shapes to calculate angles?
5. How would the solution change if the shape were not a rectangle?

**Tip:** Always look for symmetry and familiar shapes like rectangles or squares in geometry problems to simplify angle calculations.

Usa los bloques de patrón cuadrados para hallar la medida de ∠CFD. Escribe el número en el recuadro.

Learn how to calculate the measure of angle ∠CFD using square pattern blocks and the properties of rectangles. This problem highlights key geometric concepts such as symmetry and the properties of angles within a rectangle, suitable for students in Grades 6-8.

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