To "set" a set square, particularly in combination with a ruler to draw lines like parallel lines, you position and fix it relative to the ruler. This allows you to slide the set square while maintaining a consistent angle or distance.
Setting a set square with a ruler is a fundamental technique in technical drawing for creating accurate parallel lines. The process involves using the straight edge of a ruler as a guide for the set square.
Steps for Setting a Set Square to Draw Parallel Lines
Based on the provided method, setting and using a set square to draw parallel lines involves these key steps:
- Positioning the Set Square: Begin by positioning an edge of the set square against a ruler. Align one of the other edges (usually the hypotenuse or one of the shorter edges) where you want to draw your first line and draw a line along one of the other edges of the set square.
- Fixing the Ruler and Moving the Set Square: Keep the ruler fixed exactly at the same position. Slide the set square into a new position along the edge of the ruler.
- Drawing the Parallel Line: Once the set square is in the new position, draw a line along the same edge that was used to draw your first line. Since the set square maintained its orientation by sliding along the fixed ruler, the second line will be parallel to the first.
This method effectively "sets" the angle of the set square relative to the fixed ruler, allowing you to create multiple lines at that specific angle (most commonly 90°, 60°, 45°, or 30°, depending on the type of set square) that are parallel to each other.
Practical Application
This simple technique is crucial for various drawing tasks, such as:
- Drawing lines for graphs
- Creating layout lines in geometry
- Drafting architectural plans or technical drawings
By keeping the ruler stationary and sliding the set square, you ensure that the angle of the drawn lines remains consistent, resulting in perfectly parallel lines.
