Question

The triangle with vertices (-2, 1) (-2, 2) (5,2) is a) Scalene b) equilateral C) isoceles d) right angled isoceles
Give answer and explanation​

Answer 1

Explanation:

A(-2,1) B(-2,2) C(5,2)

d(AB) = √(-2+2)^2 + (2-1)^2

= √0 + 1

= 1

d(BC) = √(5+2)^2 + (2-2)^2

= √(7)^2 + 0

= √49

= 7

d(AC) = √(5+2)^2 + (2-1)^2

= √49 + 1

= 5√2

Since all the distances are unequal

therefore it is a scalene triangle