Question

The triangle formed by the points (3,5), (6,9), and (2,6) is

• A. equilateral
• B. isosceles
• C. right-angled
• D. scalene

Answer 1

The correct option is B isosceles

A = (3, 5), B = (6,9), C = (2, 6)
$A{B}^2={(3-6)}^2+{(5-9)}^2=25$
$B{C}^2={(6-2)}^2+{(9-6)}^2=25$
$A{C}^2={(3-2)}^2+{(5-6)}^2=2$
AB = BC