有两种情况
1、AB//CD 角A=90=角D
(5-3)/(2-3)=(n-1)/(m-6)
2m+n=13
(n-5)/(m-2)=1/2
m=18/5
n=29/5
2、AD//BC 角A=90=角B
(n-5)/(m-2)=(3-1)/(3-6)=-2/3
2m+3n=19
(n-1)/(m-6)=3/2
3m-2n=16
m=86/13
n=25/13
有两种情况
1、AB//CD 角A=90=角D
(5-3)/(2-3)=(n-1)/(m-6)
2m+n=13
(n-5)/(m-2)=1/2
m=18/5
n=29/5
2、AD//BC 角A=90=角B
(n-5)/(m-2)=(3-1)/(3-6)=-2/3
2m+3n=19
(n-1)/(m-6)=3/2
3m-2n=16
m=86/13
n=25/13