ABCD square

In the ABCD square, the X point lies on the diagonal AC. The length of the XC is three times the length of the AX segment. Point S is the center of the AB side. The length of the AB side is 1 cm. What is the length of the XS segment?


x =  0.354 cm


a=1 cm u=2 a=2 12 cm1.4142 cm  u1=3/4 u=3/4 1.41421.0607 cm u2=1/4 u=1/4 1.41420.3536 cm  u3=3/4 a=3/4 1=34=0.75 cm u4=1/4 a=1/4 1=14=0.25 cm  s=a/2=1/2=12=0.5 cm  s2=su4=0.50.25=14=0.25 cm  x=s22+u42=0.252+0.2520.35360.354 cma=1 \ \text{cm} \ \\ u=\sqrt{ 2 } \cdot \ a=\sqrt{ 2 } \cdot \ 1 \doteq \sqrt{ 2 } \ \text{cm} \doteq 1.4142 \ \text{cm} \ \\ \ \\ u_{ 1 }=3/4 \cdot \ u=3/4 \cdot \ 1.4142 \doteq 1.0607 \ \text{cm} \ \\ u_{ 2 }=1/4 \cdot \ u=1/4 \cdot \ 1.4142 \doteq 0.3536 \ \text{cm} \ \\ \ \\ u_{ 3 }=3/4 \cdot \ a=3/4 \cdot \ 1=\dfrac{ 3 }{ 4 }=0.75 \ \text{cm} \ \\ u_{ 4 }=1/4 \cdot \ a=1/4 \cdot \ 1=\dfrac{ 1 }{ 4 }=0.25 \ \text{cm} \ \\ \ \\ s=a/2=1/2=\dfrac{ 1 }{ 2 }=0.5 \ \text{cm} \ \\ \ \\ s_{ 2 }=s - u_{ 4 }=0.5 - 0.25=\dfrac{ 1 }{ 4 }=0.25 \ \text{cm} \ \\ \ \\ x=\sqrt{ s_{ 2 }^2 + u_{ 4 }^2 }=\sqrt{ 0.25^2 + 0.25^2 } \doteq 0.3536 \doteq 0.354 \ \text{cm}

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