› free-math-worksheets › fourthMath Worksheet: Area and perimeter of irregular rectangular ... Area and perimeter of irregular rectangular shapes. Geometry worksheets on finding the area and perimeter of irregular rectangular shapes. Open PDF. Inches, feet, yards: Worksheet #1 Worksheet #2 Worksheet #3. 5 More. Metric cm, m: Worksheet #4 Worksheet #5 Worksheet #6. 5 More.