To resize selected object(s), position the cursor over the one of the corners of a selected object until the cursor becomes a two-headed arrow. When the two-headed arrow cursor is present, hold down the mouse button while moving the cursor to resize the object. Release the mouse button once the item has reached the desired size. If you hold down SHIFT while resizing, the aspect ratio (height vs. width) of the selected object(s) will be maintained.

 

The Format tab→ Size command opens a dialog window where the desired size can be specified by height X width, or scale (percent).

 

A convenient way to resize several objects to the same size is using the Align tool.