# 2d&3d curves

#### nmvselvam

##### New member
Any one pls explain how to construct 2d&3d curve with exampls in proe2001

Thanks

selvam

#### huliyar

##### New member
your question is very vague. list any specific issue. however, you can create curves in lot of ways. easiest would be sketch a curve which would be obviously 2d. you can chose points or vertices to create 3d curves, can chose edges of solid/surface geometry tocreate curves (either splines or curves with bend radii).

#### BigJoe

##### New member
You can also project 2 sketches (2D) to create a 3D curve.

#### BigJoe

##### New member
BTW, don't know the menu picks in 2001. Check out the help, though, it should be in there.

#### skraba

##### New member
Creating curves in 2001:

Insert > Datum... > Curve...

#### nmvselvam

##### New member
pls tell how to create curve by equation with exampls

#### mohanbabu

##### New member
Hi Try this in create curve using equation

/* For cylindrical coordinate system, enter parametric equation

theta = t*360*5
r = theta^.5
z = 0
/*5 is the amount of circles

Regards,

Mohanbabu

#### j.thiagu

##### New member
hai , can u tell how to use graph