Tiling options are available when you add texture fills to shapes or even use a picture as a fill for a shape. Tiling can really make a difference to your shape fill. Just play around with the tiling options in PowerPoint 2016 for Mac, explained in this tutorial.
We are assuming you already have a shape filled with a texture. Right-click (or Ctrl + click) the shape, and choose the Format Picture option, as shown in Figure 1.
Figure 1: Format Picture option to be selected
This opens the Format Picture Task Pane that you can see in Figure 2. Make sure you select the Fill & Line tab (highlighted in red within Figure 2). Then select the Picture or texture fill radio button as shown in Figure 2.
Figure 2: Format Picture Task Pane
Make sure that you select the Tile picture as texture check-box (refer to Figure 2, above). You'll find several Tiling options for the texture fill of the selected shape (highlighted in blue within Figure 2, above):
Offset X and Offset Y offset the alignment of the filled in texture, as you can see within the sample squares in Figure 3.
Figure 3: Offset samples
Scale X and Scale Y change the size of the filled in texture horizontally and vertically, as shown within the sample squares in Figure 4.
Figure 4: Scale samples
Alignment changes the anchor point from which the texture is tiled over the filled shape. Figure 5 shows samples of all the 9 alignment possibilities.
Figure 5: Alignment samples
Mirror type allows you to tile a texture while flipping alternative tile areas horizontally or vertically, or in both directions as shown in Figure 6.
Figure 6: Mirror samples
To see samples of all the Tiling options, see the online presentation below:
Figure 7 shows the texture fill with edited tiling options. Compare Figures 1 and 7 to see the difference.
Figure 7: Texture fill with edited tiling options
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Fills for Shapes: Tiling Options (Glossary Page)