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Perimeter
Year 4 • Maths
Choose a lesson (10)
- Know that a regular polygon has sides that are the same length and angles that are the same size
- Understand that different shapes can have the same perimeter
- Understand that the perimeter of a regular polygon can be calculated by multiplication
- Know that unknown side lengths can be calculated from the perimeter and known side lengths
- Know that perimeter is measured in units of length and can be found by counting or measuring units
- Calculate the side length of a regular polygon by division where the perimeter is known
- Know that the perimeter is the distance around a 2D shape
- Know that perimeter can be calculated by adding together the side lengths of a 2D shape
- Know that the perimeter of a rectangle can be calculated by addition and multiplication
- Solve problems involving the perimeter and side lengths of polygons