One corner of the triangle was cut off in a straight line that does not pass through the apex

One corner of the triangle was cut off in a straight line that does not pass through the apex of the triangle. How many angles does the resulting figure have?

If a corner was cut off a triangle, while the cut passes along two adjacent sides of the triangle, without touching the vertices, then instead of one vertex, two corners are formed in place of the cut, and, accordingly, two corners will appear. This means that the new shape will have only 4 corners.

A special case of such a quadrangle will be a trapezoid (if the cut runs parallel to the opposite side of the cut corner).