Question

the coordinate of two vertices of a triangle are (1,2)and (3,5). if the centroid of the triangle is at origin,find the coordinate of the 3rd vertex........................pls solve this question

Answer 1

THE THIRD VERTEX IS (-4,-7)

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Answer 2

x coordinate =

$x = \frac{x1 + x2 + x3}{3} \\ \\ 0 = \frac{1 + 3 + x3}{3} \\ \\ 0 \times 3 = 4 + x3 \\ \\ - 4 = x3$

y coordinate =


$y = \frac{y1 + y2 + y3}{3} \\ \\ 0 = \frac{2 + 5+ y3}{3} \\ \\ 0 \times 3 = 7+ y3\\ \\ - 7 = y3$

coordinates of third vertices are ( -4, -7 )

hope it helps you!
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