Question

determine the value of a if ab is equal to BC where a,b,c are the points (-5, 1), (0,5)and(a,1) respectively​

Answer 1

Step-by-step explanation:

The centroid formed by ΔABC is same as the centroid formed by the triangle formed by joining their midpoints.

i.e., centroid of ΔABC=centroid of ΔPQR

Centroid of ΔPQR=(

3

6−4+2

,

3

−1−5−3

)

=(

3

4

,−3)

∴ Centroid of ΔABC=(

3

4

,−3).

solution