Types of lines in Draw menu used in Auto cad

Line

The basic and most important element of drawing used in auto cad. Short key of line command is "L".

Every time you enter the short key of any command, follow the instructions in the command bar. When you press " L" in the command bar, message appear in the command bar " specify first point".

Click on any point at the drawing area. Navigate your direction through mouse and enter your required length or click any point. As we know basic definition of line is " the distance between two point is called line.In Auto cad 2004 or previous versions supporting lengths and angle does not appear when you navigate the line's direction.(It does not mean that they does not appear, such information if you want to check, appears on the status bar). In Auto cad 2007 and onward versions provide supporting lengths and angles.

Ray

Ray command is used for making horizontal and vertical lines which are used as a reference lines or extension lines.These lines are helpful to make object which are parallel to each other. If you are draftsman, there are so important to draw objects in first and third angle projection methods. Here you have to draw parallel object side,front and top views. To draw ray lines follow the given instructions.

Click on the draw menu, from drop down list select the ray command.

Specify start point. (provide the reference point from where ray line should start.)

Specify through point (provide direction and click from there)

Construction Line

Method to draw construction line is same with ray line, but construction line have both sides extension. These extend lines can be trim after completing the object. These lines are also can be drawn either in vertical or horizontal axis.(or you can draw in diagonal axis.)