DLP Gr. 4 Module 83: Comprehension of perimeter of square and rectangle Perimeter of Squares and Rectangle Lesson Guide in Elementary Mathematics 4: Measurement: Comprehension of Perimeter DLP Gr. 4 Module 82: Finding the perimeter of a triangle NFE Accreditation and Equivalency Learning Material: Perimeter and Areas Deriving the formula for the area of rectangle and square EASE Module 5 Geometry of Shape and Size Area of a Parallelogram Units of Measure for Area of Parallelogram and Triangle