Nothing looks more amateurish than objects dropped randomly on a PowerPoint 2013 slide with no apparent concern for how they line up with each other. The Drawing Tools tab includes an Align button that brings up a menu with the following commands:
Align Left
Align Center
Align Right
Align Top
Align Middle
Align Bottom
Distribute Horizontally
Distribute Vertically
The first three commands (Align Left, Center, and Right) align items horizontally; the next three commands (Align Top, Middle, and Bottom) align items vertically.
You can also distribute several items so that they’re spaced evenly. Select the items that you want to distribute, click the Draw button, choose Align or Distribute, and then choose Distribute Horizontally or Distribute Vertically. PowerPoint then adjusts the spacing of the objects that appear between the two outermost objects selected.
Another quick way to align one item to another is to simply drag the first item until it is close to the alignment you want. When the item reaches the correct alignment, a magic guideline will appear to indicate that you have found the correct alignment. If you release the mouse button while this magic guideline is visible, the object will be snapped into alignment.