[SOLVED] IBV4 The quadrilateral OABC has vertices with coordinates O(0, 0), A(5, 1), B(10, 5) and C(2, 7).

[karush]

View attachment 1212

wasn't sure about $\overrightarrow{AC}$

 

[MarkFL]

Looks good to me.

 

[karush]

Looks good to me.

thanks to MHB ...making some progress ......