Final answer:
To begin creating a shape in CREO Parametric, start a new file, sketch the 2D geometry on a selected plane, then use features like Extrude or Revolve to turn the sketch into a 3D model. Apply dimensions and constraints for accuracy, and refine with further details as needed.
Step-by-step explanation:
To start making a shape in CREO Parametric, first open the software and create a new part or assembly file. Choose an appropriate plane to start a sketch. Use the sketching tools to create the desired 2D geometry that will form the basis of your 3D model. For example, select the 'Line' tool to draw straight lines, or the 'Circle' tool to create circular shapes. Once the 2D sketch is complete, utilize features like Extrude, Revolve, or Sweep to give the sketch a third dimension, turning it into a 3D shape. Apply dimensions and constraints during the sketch phase to ensure that your shape has the precise sizes and relationships required for your design. After finishing the 3D feature, you can refine the model further with operations such as fillets, chamfers, and shell, to add detail to your shape.