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In the Sketching toolboxes, select Rectangle. In the Graphics window, create a rough Rectangle from starting from the origin in the positive XY direction (Make sure that Hover the cursor near the origin until you see a letter P at the origin before you start dragging the rectangle. The letter P at the origin . This means the geometry is constrained at the origin.)cursor is coincident with a point, in this case the origin. Then drag the cursor to draw a rectangle.
You should have something like this:
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