Use Insert Shape 
to add shapes to the drawing. The shape will be drawn as a closed line, that may be filled. Select your shape from the drop-down list. 120 different shapes are available.
Hold the Shift key down when resizing with Insert Shape 
to keep the original proportions of the shape. For example, use Shift to draw a square rather than a rectangle, or a circle instead of an ellipse.
If Snap to Grid is used when drawing a shape, the shape will snap to the grid lines.
Use Multiply to automatically create copies of shapes.
Shortcuts
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Insert tab, Shape:
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Keys: Alt, I, S
Draw a Shape
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Select the desired line and fill colors and the line width.
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In the Insert Shape drop-down menu, select a shape.
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Click the Insert Shape icon
. The shape is placed on the canvas. -
Drag the corner handles to resize as desired.
To resize proportionally (so that a square remains square), place the pointer over the corner handle so it becomes a double-arrow pointer, then hold down the Shift key and drag.
Hold down Ctrl to resize from the center. By default, shapes are drawn from the corner. -
Click outside the shape to deselect.
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If the shape needs to be moved, click to reselect, then move.
Alternatively, use one of the select tools to move the shape.
Select one of 120 shape types from a drop-down list.