Composed element, multi-layered board and panel-shaped element for forming this composed element

A composed element, in the form of a furniture element, which comprises at least two panel-shaped elements, including a first panel-shaped element and a second panel-shaped element that are configured to be connected to each other such that in a connected state, the first panel-shaped element is oriented at a different angle with respect to the second panel-shaped element, the first panel-shaped element being non-parallel to the second panel-shaped element,

• wherein said panel-shaped elements in the connected state are connected by means of coupling parts comprising a groove and an edge portion, the groove being provided at the first panel-shaped element and the edge portion being provided at the second panel-shaped element, the edge portion being configured such that it can be inserted along an insertion direction into the groove to form a tongue and groove connection,
• said coupling parts being additionally provided with locking elements configured to lock said edge portion in said groove, the locking elements including an insertion piece and a locking part, the insertion piece being provided in addition to said groove and said edge portion;
• and
• wherein the insertion piece includes a laterally movable locking portion, and the insertion piece is at least partially inserted into a recess of one of the first panel-shaped element or the second panel-shaped element prior to connecting the panel-shaped elements, and the locking part is formed at the other one of the first panel-shaped element or the second panel-shaped element, and
• wherein, in the connected state, the laterally movable locking portion cooperates with the locking part formed at the other one of the first panel-shaped element or the second panel-shaped element by the laterally movable locking portion locking said edge portion in said groove with a movement of the laterally movable locking portion, said movement of the laterally movable locking portion being in a direction non-parallel to the insertion direction of the edge portion into the groove.