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How to draw a line at a specific angle
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Draw a perpendicular line from a fraction of a line (e.g. ¼)
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Snapping no (longer) working? Here’s how to fix it
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Grouping objects
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Design Tools: Polyline/Path Elevations
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Calculate polyline elevations automatically from a reference path
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How to calculate a slope with a fixed gradient
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How to calculate the midpoint?
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Default Styles for points, lines and polygons