# 3D Space Interactive Applet

It's often hard to see what's going on in a 2-dimensional static image of a 3-dimensional graph.

You can explore the concepts of 3D cartesian coordinates using the applet below.

The initial position of the point P shown in the 3D graph is (2, 3, 5), which is the same as the introductory 3D example on the previous page, The 3-dimensional Co-ordinate System.

I've used the following convention for the placement of the axes - the *x*-axis goes off to the left and slightly towards us, the *y*-axis goes out to the right and towards us, and the *z*-axis is up. These follow the **right hand rule** mentioned in the previous page.

## The applet

### Things to do

You can:

**Drag**the curve left-right and up-down to see the axes and point P from different angles**Change**each of the*x*-,*y*-, and*z*-values of the point P by using the**sliders**around the 3D graph.**Zoom**in and out using the mouse wheel (or 2-finger pinching, if on a mobile device)**Pan**the whole graph left and right using the right mouse button and dragging (or 3-finger swipe on a mobile device)

x

y

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