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CGP EDU Academic Team
Published on: August 14, 2026
AD is a median of Δ ABC. If A ≡ (4, 7, – 8) and (1, 1, 1) is the centroid of the triangle, then find the co-
ordinates of D.
Text Solution
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Sol.
G ≡ (1, 1, 1) given 
∴ 1 = 
; 1 = 
; 1 = 
⇒ x = – 1/2 , y = – 2, z = 11/2
∴ D ≡ 
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