Without using the Pythagoras theorem, show that the points (4, 4), (3, 5) and(–1,–1) are the vertices of a right angled triangle.

Question

goformit100 · Answer

@mayankdevnani

hartnn · Answer

which grade Q's are u asking ?

goformit100 · Answer

i hve give the exam for 12th this year.

hartnn · Answer

u know pythagoras theorem and distance formula ?

anonymous · Answer

Use the distance formula.

goformit100 · Answer

No I an very weak  at co-ordinate geometry :'(

hartnn · Answer

Distance between points (x1,y1) and (x2,y2) is 
$\huge d=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$
does this help ??

anonymous · Answer

@goformit100  then there is one concept - Distance formula.

If (x1,y1) and (x2,y2) are two given points on any co-ordinate plane,

the distance b/w 2 points is given by -

$$\sqrt{(x1-x2)^2 + (y1-y2)^2}$$

goformit100 · Answer

@hartnn How to use it here ?

hartnn · Answer

take 2 points at a time
 (4, 4), (3, 5)
x1 = 4
y1 =4
x2 = 3
y2=5
d1=... ?

goformit100 · Answer

ok , I got it Thank You Sir