Question

Show that the points A(1,7) B(4,2) C(-1,-1) are the vertics of isosceles triangle​

Answer 1

Answer:

To show that the points r the vertics of a isosceles triangle we have to proof that any two sides of this triangle r same

Step-by-step explanation:

A=(1,7), B= (4,2), C=(-1,-1)

AB=

$\sqrt{ {(4 - 1) }^{2 } + ( {2 - 7)}^{2} }$

$\sqrt{34}$

BC=

$\sqrt{ {( - 1 - 4) }^{2} + {( - 1 - 2)}^{2} }$

$\sqrt{34}$

Thus, AB=BC

So ,the points r the vertics of a isosceles triangle