Question

Q10. Prove that the points (1, -1),(-2,4) and (4, -6) do not form a triangle.​

Answer 1

Answer:

IT Will form an isosceles triangle.Because two sides of triangle are equal.

Answer 2

Step-by-step explanation:

x1=1,y1=-1

x2=-2,y2=4

x3=4,y3-6

area =1/2(x1*(y2-y3) +x2(y3-y1) +x3(y1-y2))

area =1/2( 1*(4-(-6))+(-2)(-6-(-1))+4(-1-(-4))

area= 1/2(10+10+12)

area= 1/2(32)

area=16 .,,, which is not equal to zero. hence proved