The tensile and dielctric strength of the epoxied resin with bi-directional woven glass fibers with a laminate of two layers(G-10) are studied, and the test parameter is the angle between fiber orientation and the tensile axis. The obtained results may be summaried as follows: 1) when the angle between fiber orientation and tensile axis was varied from 0$^{circ}$ to 45$^{circ}$ the yield and fracture stresses have a tendency to decrease with increase in the angle. Especially, the decrease rates in the yield and fracture stresses are changed remarkably in the range of 0$^{circ}$ to 15$^{circ}$. 2) The fracture strain has showed the maximum value when the angle between fiber orientation and tensile axis is 45$^{circ}$, and showed the rapid rate of change from 15$^{circ}$ to 45$^{circ}$. 3) For the sample with same angle between fiber orientation and tensile axis the maximum dielectric strength under compressive stress is decreased with increase in tensile stress, when the compressive stress is increased as a parameter of tensile stress. 4) When the angle between fiber orientation and tensile axis is 45$^{circ}$, the dielectric strength showed the worst value, as the mechanical strength did.