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ajinkya bhole Grade: 10

in triangle ABC, AB=AC B(3,6) C(7,12) G is centroid of tri.ABC .G moves on line x-y=1.find coordinates of G

ans-(8,7)(how????)xplain

7 years ago

## Answers : (1)

147 Points

Dear ajinkya

G moves on line x-y=1

so let G is (h,h-1)

since AB =AC

so G is symittrical about B and C

so GB =GC

GB2 =GC2

(h-3)2 + (h-1-6)2  = (h-7)2 +(h-1-12)2

(h-3)2 + (h-7)2  = (h-7)2 +(h-13)2

(h-3)  = (h-13)2

open square

h = 8

so G =(8,7)

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7 years ago
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