Is this correct or am I way off??
plot each point and form the triangle ABC. Verify that the triangle is a right triangle. Find its area. A =(4, −3); B =(4, 1); C = (2, 1)

What I did:

D(A,B)=sqrt (4-4)^2+(-3-1)^2=0+16= 16
D(B,C)=sgrt (4-2)^2(1-1)^2=4+0=4
D(A,C)=sqrt (4-2)^2+(-3-1)^2=4+16=20

D(A,B)^2+(B,C)^2=16^2+4^2=256+16=272
D(A,C)=20^2= 400

D(A,B)^2+D(B,C)^2 does not equal D(A,C)^2

It is not a right triangle

Question

Is this correct or am I way off??
plot each point and form the triangle ABC. Verify that the triangle is a right triangle. Find its area. A =(4, −3); B =(4, 1); C = (2, 1) 

What I did:

D(A,B)=sqrt (4-4)^2+(-3-1)^2=0+16= 16
D(B,C)=sgrt (4-2)^2(1-1)^2=4+0=4
D(A,C)=sqrt (4-2)^2+(-3-1)^2=4+16=20

D(A,B)^2+(B,C)^2=16^2+4^2=256+16=272
D(A,C)=20^2= 400

D(A,B)^2+D(B,C)^2 does not equal D(A,C)^2

It is not a right triangle

mertsj · Answer

When you found your distances, you forgot to take the square root.

anonymous · Answer

Can you help me where I went wrong? I am not good at math..lol But I tried..

mertsj · Answer

|dw:1328143347978:dw|