Question

how to justify area of the triangle in coordinate geometry. class 10

Answer 1

Answer:

Step-by-step explanation:

Area of a triangle

Triangle is the basic polygon which has 3 edges and 3 vertices. Area of the triangle is a measure of the space covered by the triangle in the two-dimensional plane.

Area of a triangle is found using different methods.

1. When base and altitude of the triangle are given.

Area of the triangle, A = 12 × b × h

where b and h are base and altitude of the triangle respectively.

2. When length of three sides of the triangle are given.

Area of the triangle is calculated using the equation,

A = s(s − a) (s − b) (s − c)−−−−−−−−−−−−−−−−−−−−−√

Where a,b, c are side lengths of the triangle and s is half of the perimeter.

s =  a + b + c2