Media Summary: Because we don't have the lines showing but now this is two 123D Design - Sizing and Positioning 3D Primitive Shapes with Accuracy A Project sketches to a solid and trim (erase) them individually.
Autodesk 123d Dinosaur Tutorial Part - Detailed Analysis & Overview
Because we don't have the lines showing but now this is two 123D Design - Sizing and Positioning 3D Primitive Shapes with Accuracy A Project sketches to a solid and trim (erase) them individually.