There is only 1 straight side of the triangle that can be lined up with the rectangle on the short sides of the rectangle.
Therefore you can't ignore the point. The point has to be centered, leaving 2 points hanging.
As you can see in this quicky image, the side points of the triangle hang over...and need to.
Just got to thinking....should I trim the ears off first before attaching to the rectangle? If so, would it be the normal 1/4"? Keeping in mind that there will be a larger triangle being attached to the long side of the rectangle, then attaching 4 of them together to make one block