B1C^2=BB1^2+BC^2
B1C=2倍根号5
AC^2=AB^2+BC^2
AC=2倍根号2
A1C^2=AA1^2+AC^2
A1C=2倍根号6
由题知,A1B1=2,
因为A1B1^2+B1C^2=A1C^2
所以三角形A1B1C为直角三角形,所以A1到直线B1C的距离为A1B1=2
B1C^2=BB1^2+BC^2
B1C=2倍根号5
AC^2=AB^2+BC^2
AC=2倍根号2
A1C^2=AA1^2+AC^2
A1C=2倍根号6
由题知,A1B1=2,
因为A1B1^2+B1C^2=A1C^2
所以三角形A1B1C为直角三角形,所以A1到直线B1C的距离为A1B1=2