50 cad exercise drawing plus#

We can also set absolute coordinates as the dynamic input, as shown in the following picture. Most CAD systems have dynamic input(DYN) and we can directly input coordinate values without looking at the command line.Д«ut there are differences between dynamic input and command line input, for example, when we draw a line and inputting absolute coordinates as the first point, but default coordinate for the next point is relative coordinates, then no need to add before the coordinates.

50 cad exercise drawing plus#

Spherical coordinates: in the form of: X <, which is the polar coordinates in the 2D drawings plus the angle of the XY plane. If we need to include angle in 3D coordinates, we can include Cylindrical coordinates and Spherical coordinates.Д¬ylindrical coordinates: in the form of: X <, Z, which is polar coordinates in the 2D drawing plus the Z coordinates. Both absolute coordinates and relative coordinates can be entered, but needs to be added when entering relative coordinates such as 10< 45.Д¬oordinates in 3D drawings are similar to those of 2D drawings. Polar coordinates: is to position points by entering distance and angle separated by <. Firstly, enter Line command and enter coordinates according to prompts: Remember to add before entering coordinate values, take 3 for example, it shows the distance from the last point in the X-axis direction is 3 and in the Y-axis direction is 3.ДЇor example, draw a triangle with left lower point (-3,-2) using relative coordinates. Relative coordinates: the distance or angle of axes relative to the last point. For example, when drawing a square 8 per side, coordinates for a left lower point is (4,5), then weвЂ™ll need to enter points coordinates in clockwise order: left upper point(4,13), right upper point (12,13), right lower point (12,5). When using absolute coordinates, weвЂ™ll need to know the exact position of points of the objects. For example, entering absolute coordinates needs us to draw a line from point (-3,2) to point (4,4), firstly, enter Line command and then enter as the following shows: When entering absolute coordinates, enter the coordinates of points in the command bar. When entering those coordinates, we can either enter absolute coordinate values relative to the origin of the coordinates or enter relative values to the last point.ДЄbsolute coordinates: is distance or angle of axes relative to the origin of the coordinates. In addition to these, the CAD system also provides polar coordinates, cylindrical coordinates, spherical coordinates. The common methods to enter coordinates in CAD is to enter X, Y coordinate values in 2D drawings and enter X, Y, Z coordinate values in 3D drawings. Therefore, the CAD system provides many ways to enter coordinates. We need to pinpoint a point using different methods based on what weвЂ™ve known. Sometimes we know the exact coordinates, but sometimes we only know the angle and distance.