A Right view, displays the model from the right:

• the yz plane is parallel to your screen.
• y is positive from left to right (horizontally).
• z is positive from bottom to top (vertically).
• x is positive toward you, perpendicular to the screen.

While, for a Left view:

• y is positive from right to left (horizontally).
• x is positive away from you, perpendicular to the screen.