A panel, including a centrally located core provided with an upper side and a lower side, at least one first coupling part and at least one second coupling part connected respectively to opposite edges of the core, which first coupling part comprises an upward tongue, at least one upward flank lying at a distance from the upward tongue and an upward groove formed in between the upward tongue and the at least one upward flank, wherein a recessed portion is shaped like a triangle and the underside of the upward tongue is at an angle; wherein at least a part the side of the upward tongue facing away from the at least one upward flank is located at a distance from at least a part of the at least one upward flank; and wherein the recessed portion extends over at least 90% of the distance.