# Origin

## Definition Of Origin

The point of intersection of the altitudes of a triangle is called an orthocenter.

The coordinates of the origin are (0, 0).
Counting of the coordinates starts from the origin.

### Example of Origin

In the figure, x and y axis are intersecting at 'O'.
This O is called the origin of the graph. Its coordinates are (0, 0).

A. (4, - 3)
B. (3, - 4)
C. (- 3, 4)
D. (4, - 3)