Question

The triangle formed by the points (1,5), (4, 2) and (-2, 2) is
always a
Right triangle
Isosceles triangle
Right-isosceles triangle
Equilateral triangle

Answer 1

Answer:

this is the answer.......

Answer 2

Answer:

Right-angled triangle

Step-by-step explanation:

Let A(4,2),B(1,5) and C(-2,2)

We know Pythagoras theorem,

(AB)^2+(BC)^2=(AC)^2

{√(1-4)^2+(5-2)^2}^2 +{√(-2-1)^2+(2-5)^2}^2 = {√(-2-6)^2+(2-2)^2}^2

{√(9+9)}^2+{√(9+9)}^2= {√(36)}^2

(18)+(18)=36

Therefore, it is a right-angled triangle at B(1,5).