Just like bar chords, the minor pentatonic scale can be moved up or down the fretboard, enabling you to play in any key. E.g., in the third position (3rd fret) you get a G minor pentatonic scale, in the sixth position you get a Bb minor pentatonic scale, etc. Here is the fingering pattern for the C minor pentatonic scale, which is in the eighth position.
If you look at the positions of the root notes (key notes) in the previously shown scale pattern, you will notice that they form a triangular pattern. In the basic E chord and E form bar chord (root 6), you can see that the root notes are in the same positions as they are in the scale pattern.
Because of this, the aforementioned scale pattern can be described as the E form of the scale. This is the form you already know as pattern 1.