Question

find the area of triangle whose (-३,१)(१,-३)and(२,३​)

Answer 1

Answer:

dont know do it yourself

Answer 2

Answer:

Solution:

let(x1,y1=(3,1),(x2,y2)=(−1,3)and(x2,y2)=(−3,−2)

A=12∣∣∣∣x1x2x3y1y2y3111∣∣∣∣

=12∣∣∣∣3−1−313−2111∣∣∣∣

=12[3(3+2)−1(−1+3)+1(2+9)]

A = 12

this is your answer