When designing necklines, consider the following points:
- Measurement Consideration: (A) Measurements taken diagonally must be marked diagonally on the pattern to ensure accuracy, as diagonal measurements may differ from horizontal or vertical ones.
- Symmetry and Balance: (B) A wider front neckline does not automatically require a corresponding adjustment in the back neckline. The back neckline is often kept the same for stability and aesthetic purposes. Therefore, (D) The statement "If neckline is made wider in front, back neckline need not to be made wider" is accurate.
- Design Principles: (C) To maintain a balanced design and proper garment support, avoid deepening both the front and back necklines simultaneously.
Based on the above explanations, the correct points to consider are: (A), (C), and (D) only.