CollinearityMediumQuestion 300007
Question
Three points A(1, 1), B(2, 2), C(3, 3) are:
- ACollinearCorrect
- BVertices of a triangle
- CForm a right angle
- DNon-collinear
Correct answer
Collinear
Explanation
Slope AB = (2−1)/(2−1) = 1. Slope BC = (3−2)/(3−2) = 1. Equal slopes and common point → collinear.