1. **Problem Statement:** Given three quadrilaterals with markings, determine which classifications (Quadrilateral, Parallelogram, Rectangle) must be true for each figure.
2. **Key Definitions and Properties:**
- A **Quadrilateral** is any four-sided polygon.
- A **Parallelogram** is a quadrilateral with both pairs of opposite sides parallel.
- A **Rectangle** is a parallelogram with four right angles.
3. **Figure Analysis:**
**Top-left figure (A-B-C-D):**
- Opposite sides have matching arrow markings, indicating they are parallel.
- Diagonals have matching tick marks, indicating they bisect each other.
- By definition, this confirms it is a parallelogram.
- Since all parallelograms are quadrilaterals, it is also a quadrilateral.
**Center figure (W-Y-X-V):**
- Two top angles are congruent.
- Bottom-left angle is congruent to top-right angle.
- There is a right angle at vertex X.
- These angle properties confirm all angles are right angles.
- Therefore, it is a rectangle.
- Since rectangles are parallelograms and parallelograms are quadrilaterals, it is all three.
**Top-right figure (R-S-U-T):**
- Right-angle marks at vertices R and T (two adjacent right angles).
- Two adjacent right angles in a parallelogram imply all angles are right angles.
- Therefore, it is a rectangle.
- Hence, it is also a parallelogram and quadrilateral.
4. **Summary of Classifications:**
- Top-left: Quadrilateral, Parallelogram
- Center: Quadrilateral, Parallelogram, Rectangle
- Top-right: Quadrilateral, Parallelogram, Rectangle
Quadrilateral Classifications 76Fee2
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