The sketch tool of PRO/E in detail

•  HOW TO SKETCH A 2-D FIGURE USING SKETCH TOOL:

• Used for all features
• The 2-D drawing  is converted into 3-D by applying features to it like extrude,revolve,blend,sweep,swept blend etc
• Pretty easy
• Step by step process is mentioned below!!!

• Select the sketch option as shown above in the right sidebar.
• Select a plane and the direction of orientation as shown below!

• You will get a screen as shown below.

• First step to start with is to create 2 center lines as x and y axis.Trust me...its really useful

• Drawing options are on the right sidebar...

• 

  to modify the dimensions

• 

  Define a dimension

• 

• 

  This is awesome!!

• 

  to create a line

• 

  rectangle/parallelogram

• 

  circle/ellipse

• 

  to create an arc

• Select any two collinear lines after selecting the  option..then modify the diameter to create a rounded edge.This is called 'fillet'!

• Select any two collinear lines after selecting the option..then modify  the dimensions to create a chamfer.By the way this is called 'chamfering'.

• The trim and the symmetry tool.

After creating a sketch press ok...and then to insert a feature go to [insert]---->any feature...you will be directly asked the requirements or in case of extrude you will find an extrusion on your sketch..press tick and you are done!!!!