A bias cut in cloth is a slanting or diagonal severing of the material. Both warp and woof threads will be cut. (See Fig. 15.) It may vary with the requirements of the garment. A true or perfect bias, however, does not vary. It is always the diagonal of the square. It equally severs both warp and woof threads. (Fig. 16.)

Fig. 15.   Garment Bias. (Gore.)

Fig. 15. - Garment Bias. (Gore.)

Fig. 16.   True Bias.

Fig. 16. - True Bias.