How to Adjust Object Corners in Illustrator
Adobe Illustrator is a vector drawing program that gives the artist great control and flexibility in drawing, shading and filling objects on the artboard. For a smoother, more fluid and organic look, you may want to draw corners with a rounder angle than is possible with the program's default settings. Changing the object's corners to fit the degree you need is easy when you use preferences or tools to specify the object's corner radius.
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Instructions
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Launch Illustrator. Open a new document by selecting "File," then "New."
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Change the program's default corner radius for new objects you will draw on future documents. Select "Preferences" from the Edit menu and then "General" for Windows, or select "Preferences" and then "General" from the Illustrator menu on a Mac.
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Enter a numeric value in the text field next to "Corner Radius." The change to the default will apply to new rounded rectangles you draw. Alternatively, click the "Tool" palette and option-click on the rectangle tool to select the "Rounded Rectangle" tool. Click the mouse on the Illustrator document. Enter the desired corner radius value in the text field.
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Drag the "Rounded Rectangle" tool on the document while simultaneously pressing the "Up Arrow" or "Down Arrow" key. Release the key when the object has the corner radius you prefer.
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Drag the "Rounded Rectangle" tool on the document while simultaneously pressing the "Left Arrow" key to change rounded corners to square corners. Release the key when the object has the corner radius you prefer.
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Drag the "Rounded Rectangle" tool on the document while simultaneously pressing the "Right Arrow" key to create the maximum roundness on the corners. Release the key when the object has the corner radius you prefer.
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