Select the graphic you want to modify and do one of the following:

If you want to make multiple shapes the same width (with the wider shape as a reference), please click the menu "Transform" > "Set Width to Consistent" to achieve it.

If you want to make multiple shapes the same height (with the taller shape as a reference), click the menu "Transform" > "Set Heights to Consistent" to achieve it.

To standardize the sizes of multiple graphics by setting the width to match the widest graphic and the height to match the tallest graphic, select "Transform" > "Set Width and Height to Consistent" from the menu.