How to center buttons on screen horizontally and vertically plus equidistant apart?

Using the recommendations from both of you worked perfectly! Thank you so much for your help and now I can study this and apply what I learned.

Use a RelativeLayout. Button B has android:layout_centerInParent="true". Button A has android:layout_centerHorizontal="true", android:layout_above="@id/Button02", and some android:layout_marginBottom to establish whatever whitespace gap you want.

Button C has android:layout_centerHorizontal="true", android:layout_below="@id/Button02", and some android:layout_marginTop to establish whatever whitespace gap you want.

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