A blank for forming a trapezoidal display box with cutting and creasing design, consisting of a sheet of cardboard paper, comprising: - a base delimited by first and second side creases and the first side creases are defined as having cutouts with an arrow end ; - a bottom extending from one of the second side creases , said bottom being delimited by third side creases , interrupted by a male coupling consisting of a cutout with angled extremities and including a flap with a male locking tab ; - a side face extending from a fourth crease of the bottom , said side face being delimited by fifth side creases , and each fifth side crease being equally interrupted by a male coupling ; as well as an opposite crease , interrupted by a pair of male couplings , but arranged in a transversal position to the fifth side creases ; - a top , extending from the other one of the second side creases of the base , delimited by sixth side creases , also interrupted by respective male couplings , said top having a center cutout which delimits a semi-circle flap and having, in a free edge , a folding crease of a female coupling with a reentrant flap, being delimited by cutouts and including a locking tab with a crease interrupted by a rectangular center cutout, opposite to a semi-circular cutout, forming a female coupling ; - front faces extending from each first crease of the base , with free edges equipped with a folding crease of female couplings protruding from a peripheral edge ; and - an angled coupling flap extending from the front faces defined by a coupling end with a supporting part , of smaller height and, on the opposite side, a stop with a displacement part , also receiving reinforcement in an inner face ; the blank being configured to be folded and form a display box , with wider top suffering gradual reduction in the perimeter of the bottom , in trapezoidal geometry. - a base delimited by first and second side creases and the first side creases are defined as having cutouts with an arrow end ; - a bottom extending from one of the second side creases , said bottom being delimited by third side creases , interrupted by a male coupling consisting of a cutout with angled extremities and including a flap with a male locking tab ; - a side face extending from a fourth crease of the bottom , said side face being delimited by fifth side creases , and each fifth side crease being equally interrupted by a male coupling ; as well as an opposite crease , interrupted by a pair of male couplings , but arranged in a transversal position to the fifth side creases ; - a top , extending from the other one of the second side creases of the base , delimited by sixth side creases , also interrupted by respective male couplings , said top having a center cutout which delimits a semi-circle flap and having, in a free edge , a folding crease of a female coupling with a reentrant flap, being delimited by cutouts and including a locking tab with a crease interrupted by a rectangular center cutout, opposite to a semi-circular cutout, forming a female coupling ; - front faces extending from each first crease of the base , with free edges equipped with a folding crease of female couplings protruding from a peripheral edge ; and - an angled coupling flap extending from the front faces defined by a coupling end with a supporting part , of smaller height and, on the opposite side, a stop with a displacement part , also receiving reinforcement in an inner face ; the blank being configured to be folded and form a display box , with wider top suffering gradual reduction in the perimeter of the bottom , in trapezoidal geometry. <EOS>