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Perimeter of a Polygon

Geometry and Measures Perimeter of a Polygon

🎬 Video Tutorial

(0:01) Perimeter of a Polygon: The total length around a polygon. Add up the lengths of all sides to find the perimeter.
(0:12) Perimeter Formulas: For rectangles, use $2 \times (\text{length} + \text{width})$. For squares, the perimeter is $4 \times \text{side length}$.
(0:55) Triangle Perimeter: For a general triangle, add all three sides. For isosceles triangles, use $2a + b$; for equilateral triangles, use $3a$.
(1:48) Complex Shapes: For L-shaped polygons, rearranging edges into a rectangle can make perimeter calculations easier.

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📂 Revision Cards

Perimeter of a rectangle and square with formulas. Rectangle: length 5 cm, width 3 cm, perimeter 16 cm. Square: side 2 m, perimeter 8 m.

Comparing the perimeter of an isosceles triangle and an equilateral triangle, showing the formulas and values for calculating their perimeters.

Perimeter of an L-shaped polygon shown with two calculation methods. Method 1 adds all side lengths. Method 2 treats it as a rectangle.

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