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30,40. 3 RELATIVE entry refers the coordinates to the last point entered and uses the @ symbol. g. 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 Automatic window/crossing selection. qxd 14/06/2002 19:04 Page 28 28 Beginning AutoCAD 2002 The selection set Window and crossing are only two options contained within the selection set, the most common selection options being: Crossing, Crossing Polygon, Fence, Last, Previous, Window and Window Polygon. During the various exercises in the book, we will use all of these options but will only consider three at present. 1 Erase all objects from the screen – individual selection or window option 2 Refer to Fig.

From the menu bar select File-Save As and: prompt Save Drawing As dialogue box with 1. Begin folder name active 2. File name: DEMODRG respond pick Save prompt Drawing already exists message respond pick Yes – obvious? qxd 14/06/2002 19:04 Page 55 Circle creation Task The two Tan,Tan,Tan circles have been created without anything being known about their radii. 1 From the menu bar select Tools-Inquiry-List and: prompt Select objects respond pick the smaller TTT circle prompt 1. found and Select objects respond right-click prompt AutoCAD Text window with information about the circle.