1. Select the rectangle whose angle you want to change.

2. Click the left button on the selected rectangle.

3.( 1) Press the double arrows on the four corners of the rectangle with the left key and adjust the angle at will.

3.(2) Select the docking window in the menu bar window, open the transformation tool panel, select the rotation, and then select the rotation angle to rotate at a central point.

3.(3) Left-click and hold down the double arrows above and below the rectangle to change the rectangle into a parallelogram.

CorelDraw steps to change the border thickness:

1, select the shape to change.

2. On the keyboard F 12, bring up the outline pen tool panel, and you can select the border color, border thickness and border style.

3. The border style drop-down menu bar has a ready-made dotted line style, or you can customize it by clicking Edit Style.

4. The lower right corner of the contour pen tool panel is filled with background and displayed according to the image scale. I usually check the monitor according to the image scale. The background is filled, as shown. After the rectangle is filled with color, the border is thinner than the background and is not checked. Displaying in proportion to the image means that the thickness of the border will change according to the change of your rectangle.