Question

area of a triangle in co-ordinate geometry is___________________________​

Answer 1

Answer:

$\frac{1}{2} (x1(y2 - y3) + x2(y3 + y1) + x3(y1 + y2))$

• Observe the pattern
• You will remember the formula easily 1,2,3 then 2,3,1 and 3,1,2.....

Method 2

When the length of three sides of the triangle are given, the area of a triangle can be found using the Heron’s formula.

Therefore, the area of the triangle is calculated using the equation,

A = √s(s − a) (s − b) (s − c)

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

The value of s is found using the formula

s = (a + b + c)/2

Hope it helps...

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Answer 2

Answer:

hey , there is ur answer...