Question

Find the area of a triangle formed. by the points A (1,1) B(2,3):C(0,5)​

Answer 1

Answer:

5

Step-by-step explanation:

A (1 , 1) B(2 , 3) C(0 , 5)​

Area of triangle =

$\frac{1}{2} [x_1(y_2-y_3)+x_2(y_3-y_1)+x_3(y_1-y_2)]\\\\\frac{1}{2} [1(3-5)+2(5-1)+0(1-3)]\\\\\frac{1}{2} [1(2)+2(4) + 0(-2)]\\\\\frac{1}{2} [2+8+0]\\\\\frac{1}{2} [10]\\\\5$