By Robert McFarlane

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The standard sheet idea is a reference name only. qxd 14/06/2002 19:04 Page 44 Chapter 9 Line creation and coordinate input The line and circle objects so far created were drawn at random on the screen without any attempt being made to specify position or size. e. from an origin point. e. from the last point entered. In this chapter we will use our A3PAPER standard sheet to create several squares by different entry methods. The completed drawing will then be saved for future work. Getting started 1 Still in AutoCAD?

G. @100<50 and note – no comma. 4 An angle of –45° is the same as an angle of +315°. 5 The following polar entries are the same: (a) @–50<30; (b) @50<210; (c) @50<–150. Try them if you are not convinced. 6 All entry methods can be used in a line sequence. 7 A line sequence is terminated with: a) the key b) a mouse right-click and pick Enter c) ‘closing’ the shape with a C 8 The rectangle command is useful, but it is a ‘single object’ and not four ‘distinct lines’. 9 The LINE command can be activated by: a) icon selection from the Draw toolbar b) menu bar selection with Draw-Line c) entering LINE at the command line.

Activate the LINE command (icon or menu bar) and enter the following coordinates: Specify first point 175,150 start pt 9 Specify next point @50<45 pt 10 Specify next point @50<135 pt 11 Specify next point @50<225 pt 12 Specify next point C to close the square and end line command. Note 1 The relative polar entries can be read as: a) @50<45 is 50 units at an angle of 45 degrees from the last point which is 175,150 b) @50<225 is 50 units at an angle of 225 degrees from the current cursor position.

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