14. Eduard wants to draw vertical and oblique lines; what appropriate tools should he use?*A. compassB. rulerC. triangleD. T-square

1. Break Down the Problem

Eduard needs to draw vertical and oblique lines. Each type of line may require different tools for precision and accuracy.

2. Relevant Concepts

• Vertical Lines: Typically drawn using a straight edge.
• Oblique Lines: Can be achieved using tools that allow for angles to be measured or set.

3. Analysis and Detail

• Compass (A): Primarily used for drawing circles and arcs, not suitable for straight lines.
• Ruler (B): Useful for drawing straight lines, both vertical and oblique.
• Triangle (C): Useful for creating specific angles, thereby aiding in the drawing of oblique lines but may not be practical for drawing vertical lines directly.
• T-square (D): Specifically designed to draw horizontal and vertical lines accurately, making it suitable for vertical lines. It can also be used in conjunction with a triangle to create oblique lines.

4. Verify and Summarize

For drawing vertical lines, the ruler or T-square can be employed effectively, while oblique lines can be drawn using a ruler or a triangle. Therefore, a combination of a T-square and a ruler would provide the best approach for both types of lines.

Final Answer

The most appropriate tools for Eduard to use are B. ruler and D. T-square.