How to Draw an Umbrella in AutoCAD
Rather than dive into three-dimensional objects such as umbrellas, let's start by sketching in two dimensions. The most common use for AutoCAD is to create floor plans and layouts.
Drawing Lines
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Object Selection
By left-clicking on them, you can select drawn objects. Hold down Shift and click again to unselect. Using the left-click and left-to-right mouse movement, select multiple objects. A selection will be made of all objects fully enclosed in the blue rectangle. From now on, any object touched by the green rectangle will select when you drag from right to left. Verify your selection once more by clicking once again.
A lasso is enabled by clicking the left mouse button and holding it. Practice that by choosing your square differently a few times. You can either press Delete once more or type delete to erase this selection.