You can resize objects simply.
To re-size an object:
Select a sizing handle at a corner of the object to change the height and width at the same time. If you hold the CTRL key while you move a corner sizing handle, the object maintains its aspect ratio (that is, a square remains a square).
To select an object's node:
If you have a node selected and then click another node within the same object, the first node will deselect. To select multiple nodes, hold down the Ctrl key and click each node you want to select. (With the Ctrl key held down, you can click a previously selected node to deselect it.) Clicking the same node again toggles the selection of the node alternately on and off. To deselect every node, click anywhere other than on a node.
To move a node of an object:
Selecting and moving multiple nodesA structural anchor point for a graphic object, usually visible as a small square box superimposed over a graphic. Nodes will be located separately at the start, at the end, and at every change in direction within a graphic object. . maintains the aspect ratio of the graphic object between the selected nodes.
To add a node to an object:
Depending upon the keyboard you're using, the plus key could be either on the number pad section, or accessed on the main keyboard via the Shift key.
To delete a node from an object
If no nodes are selected, pressing the Delete or minus keys deletes the object.