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# help to draw a line

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hi all

i want to draw a line with this info

AB=75 MM

A=(5,5,0)

Angle with horizontal plane 45

Angle with vertical plnae 30

pls say how to draw it?!

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Command: _line Specify first point: 5,5,0

Specify next point or [undo]: @75

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Check this (I haven't verified the solution). (oops, I missed that Point A was not at 0,0,0)

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thx for answers! another question: i have drown 2 parallel line in 3D how i can measure angle between them?! how i can make plane between them ?

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i have drown 2 parallel line

By definition if they are parallel the angie is zero

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heh yea my mistake! i meant Crisscross or have same point!

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i want to draw AB

A(0,0,0)

B(70,20,60)

but not by second point! i try by angles

command : _line specify first point: 0,0,0

specify next point or [close/undo] : @94.3398

what put instead of question mark ?

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If you drew out the line from your coordinates, then you could List it, and all the information is given:

LINE Layer: "0"

Space: Model space

Handle = 2B

from point, X= 0.0000 Y= 0.0000 Z= 0.0000

to point, X= 70.0000 Y= 20.0000 Z= 60.0000

In Current UCS, Length = 72.8011, Angle in XY Plane = 15.945396

3D Length = 94.3398, Angle from XY Plane = 39.494098

Delta X = 70.0000, Delta Y = 20.0000, Delta Z = 60.0000

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thx! i want to know how draw a line with first point and Angle from XY and XZ plane for example A(0,0,0) AB=40mm and Angle from XY=30 Angle from ZX=45

A member said with @40

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i want to draw AB

A(0,0,0)

B(70,20,60)

but not by second point! i try by angles

command : _line specify first point: 0,0,0

specify next point or [close/undo] : @94.3398

what put instead of question mark ?

To fully answer your previous question, fill in the query marks from the information in my post:

specify next point or [close/undo] : @94.3398

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We’re dealing with an interpretation problem, I think. AutoCAD’s standard spherical coordinate entry would commonly be phrased:

From 5,5,0, extend a distance 75 mm at 45 degrees in the XYplane and 30 degrees from the XY plane.

In AutoCAD, that line would be returned with the command sequence:

Command: _line Specify first point: 5,5,0

Specify next point or [undo]: @75

I thought that was the request in the original post, though I probably misinterpreted your specification ‘Angle with vertical plane 30’.

The wording in post #9 is different from post #1, but, to be honest, still a bit vague.

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i dont know why cant understand and my english is little so hard to say what is problem!

yout sentence:

From 5,5,0, extend a distance 75 mm at 45 degrees in the XYplane and 30 degrees from the XY plane.

first i draw with first point (0,0,0) in XY plane with 45 degrees. it means degree between it and X and Y axis is 45. also the angle between this line and XZ plane is 45.

now if i rise the end point until the angle between line and XY plane become 30! now the angle between our line and XZ plane isnt 45! it is more/less than 45!

so i want draw a line to have particular angle FROM XZ and XY plane not as u said IN XY and FROM XY.

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Perhaps this is a better, see attached.

fromXYfromXZ.dwg

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The projected angle into the XZ plane is 39.23°. But the vertical angle is drawn when looking normally to the line in the XY plane.

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Perhaps this is a better, see attached.

That is exactly the thing i wanted! how did u draw it?

i hope dont say @75

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I intersected the cones on layers 30fromXY and 45fromXZ . Those layers are currently off.

This could probably be done by trigonometry – if someone hasn’t posted a mathematical solution by tomorrow morning, I’ll give it a try.

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i thought drawing it should be easily! i have some paractices like this that it says length, first point and angle from XY and XZ planes and want the length and angle of FRONT VIEW and TOP VIEW.

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i thought drawing it should be easily! i have some paractices like this that it says length, first point and angle from XY and XZ planes and want the length and angle of FRONT VIEW and TOP VIEW.

This might speed up the process.

AngleFroms.xls

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thx alot that is very usefull!

i tried some lines all info was ok except front view angle for example true is 55 but it says 54.7

Edited by mamad0131

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That 'true' reading may have been rounded.

AutoCAD usually come preset to round angular dimensions to the nearest whole number. The properties can be reset for both document Units and Dimension via the two dialogs shown.

If that is not the issue, upload that drawing.

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