Technical Drawing and Sketching, ContinuedDrawingstraight linesPencil strokes are made by combined movements of your wrist and fingers.Sketch vertical and diagonal lines that slope to the left from top to bottom.Horizontal and diagonal lines that slope to the right are drawn from left toright. To help you become more proficient at sketching straight lines, placea series of dots approximately 1 inch apart and connect the dots with a seriesof short strokes. The better you become at sketching straight lines, thefarther apart you should place the dots until the dots disappear altogether.Figure 4-5 shows how to sketch straight lines.Figure 4-5.—Sketching straight lines.Continued on next page4-7
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