HERON'S FORMULA

HERON'S FORMULA

IMPORTANT POINTS TO REMEMBER

·       Area of a triangle =  1 /2* base  * corresponding height.

·       Area of a right angled triangle=  1 /2 ab, where a and b are the sides adjacent to right angle.

·        Area of an equilateral triangle of side a =√3/4 a².

·       Area of a trapezium =  1 /2   * (sum of its parallel sides)* distance between parallel sides.

·        Heron's Formula:

Area of a triangle =     s(s-a)(s-b)(s-c)

where s= semi perimeter and a, b, c are the sides of the triangle.

·       Perimeter of any triangle=sum of the length of its sides.

·       Perimeter of a rhombus of side a =4a.

·       Area of a polygon can be calculated by dividing the polygon into triangles and using Heron's formula for calculating area of each triangle.