The document provides formulas for calculating the perimeter and area of basic shapes like squares, rectangles, triangles, parallelograms, and circles. It defines each shape and gives the formula for finding their perimeter and area in terms of common properties like sides, width, length, base, height, radius, and diameter. For example, the perimeter of a square is defined as 4 times the length of one side, and the area of a square is the length of one side squared.

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2. MATHS PRESENTATION ON MENSURATION

3. MENSURATION1 2 3 4 56 7 8 9 0 . + - * /= ) ( } {] [ % ^ To find perimeter or area of a plane is knownasMENSURATION

4. Squarea plane rectangle with four equal sides and four right angles

5. Perimeter of SquarePerimeter of Square4 x Side

6. Area of SquareArea of Squareside²

7. Rectanglerectangle normallyrefers to a quadrilateral with four right angles

8. Perimeter of RectanglePerimeter of Rectangle2 (side a + side b)

9. Area of rectangleArea of rectangleWidthx Length

10. TriangleA triangle is a a three-sided polygon.

11. Perimeter of TrianglePerimeter of TriangleSide a +Side b +Side c

12. Area of TriangleArea of Triangle½ x base x height

13. Parallelograma quadrilateral whose opposite sides are both parallel and equal in length is known as parallelogram.

14. Perimeter of ParallelogramPerimeter of Parallelogram2 (side a+ side b)

15. Area of ParallelogramArea of ParallelogramBase x Height

16. CircleA circle is a simple shape consistingof those points in a plane which are equidistant from a given point called the center.

17. Perimeter of CirclePerimeter of CircleR = Radius

18. Area of CircleArea of Circle

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