Center within an object

[edee]

Is there away to tell a rectangle (layer) to center itself within the rectangle (layer) behind it? 

Because I am Really bad at math - I've learned to use the transform option to place an object in a specific place, but to use it to mathematically center an object within another object is beyond my cognitive capability (:

 

[walt.farrell]

Well, if you have Snapping enabled it's pretty easy to just use the Move tool and drag the inner one until Affinity tells you that it's centered via the green and red snapping guides.

But if you don't want to use Snapping, then with the Move tool:

1. Click the outer rectangle;
2. Shift-click the inner rectangle;
3. Click the Arrange icon, and then align to middle both horizontally and vertically.

[firstdefence]

You could also make use of the expand stroke feature by creating a rectangle with no fill and a stroke set to inner and the distance from the edge being the width of the stroke, you can also set the join to Mitre Join to get sharp corners, use Layer > Expand Stroke, then just click Geometry: Divide and this creates two rectangles, you can now add strokes and fills to suit.

You can do this with just about any shape.