posted by Nora .
If the adjacent vertices of a square ABCD are A ( -2 , 0 ) , find
- The equation of the two diagonals AC and BD
- The point of intersection O of the two diagonals AC and BD
- The equation of the altitude from O to the side CD
- The centroid of the triangle OCD by finding any two of its medians
- The perimeter of the square ABCD