Which tool is used to draw curved lines?
The curved line drawing tool is used to create curved or straight lines. The curved line tool provides greater control over the shape of a polyline than the straight line tool (see Drawing With the Straight Line Tool).
Why won’t Sketchup make a face?
Ninety percent of the time, when SketchUp doesn’t create a face where you think it should, an edge isn’t on the plane you think it’s on. To check whether your edges are coplanar, draw an edge that cuts diagonally across the area where you want a face to appear.
WHAT IS curve tool for?
The Curves tool is the most sophisticated tool for changing the color, brightness, contrast or transparency of the active layer or a selection. While the Levels tool allows you to work on Shadows and Highlights, the Curves tool allows you to work on any tonal range.