Hint to fill the polygon with color use command HATCH Soluti
     Hint: to fill the polygon with color, use command HATCH  
  
  Solution
For Design on Doors:
Method 1:
STEP 1: Make the Rectangle
 STEP 2: Make The circle of Requered Diameter on each ot the four corners of rectangle.
 STEP 3: Trim the undesired portion of the circle and square using trim command (type tr--> enter--->enter) or select command from graphical user interface.
Method 2: make rectangle and Use fillet command at corners to make it curved

