In △ABC, the coordinates of the vertices are A(1,1), B(5,5), and C(1,9). Find the coordinates of the centroid.
Show answer & explanation
Correct answer: A
Explanation
Given:
A(1,1), B(5,5), C(1,9)
According to the formula:
G = ((x₁ + x₂ + x₃)/3 , (y₁ + y₃ + y₃)/3)
x = (1 + 5 + 1) / 3 = 2.33
y = (1 + 5 + 9) / 3
= 15 / 3
= 5
(2.33, 5)