Edit shapes and lines in Numbers for iCloud
You can customize the specific features of some shapes.
For example, you can change the standard five-point star into a twenty-point starburst, adjust how rounded the corners of a square are, or change the style of a connection line (a special type of line that you can use to connect two objects).
Adjust the features of a shape
You can change specific features of any basic shape (from the Basic category in the shapes library) that has a green dot when it’s selected. For example, you can change a five-point star to have more arms.
Select one of the following shapes in your spreadsheet: a quote bubble, star, polygon, rounded square, curved connection line, arrow (an arrow shape, not a line with an arrow on one end), or double arrow.
If the object doesn’t have any green dots (as shown above), you can’t customize its shape.
Drag a green dot toward or away from the object’s center, or in a circle around the object.
Some shapes have multiple green dots, each of which affects a different aspect of the shape.
Change the style of a line or its endpoints
Change the style of connection lines
By default connection lines are curved, but you can change the line to a straight or right-angle line, and adjust the position and angle of the curve.