Cutting EQUAL corners off rectangle with the arc on 4 sides

SketchUp
6

Try the following exactly as written.

  1. Get the Rectangle Tool.
  2. Draw a rectangle on the ground plane.
  3. Get the 2-Point Arc Tool.
  4. Click on one edge just a little way from the corner (maybe 1/4 of the way along toward the opposite edge).
  5. Move the cursor to the neighboring edge and move it along until the arc turns magenta.
  6. Double click to set the second end. The corner should be trimmed automatically.
  7. Now double click just inside each of the next three corners. Each should get the same radius and the corners should be cut off.