假设此矩形面积为X,根据题意可得:
c=X-(a+b+c);
由图可知a:c=(AE*AG):(AE*GB)=AG:GB;
b:d=(ED*DH):(ED*HC)=DH:HC;
所以:
a:c=b:d;
即:
a:[X-(a+b+c)]=b:d;
解之可得:X=(ad/b)+a+b+c
假设此矩形面积为X,根据题意可得:
c=X-(a+b+c);
由图可知a:c=(AE*AG):(AE*GB)=AG:GB;
b:d=(ED*DH):(ED*HC)=DH:HC;
所以:
a:c=b:d;
即:
a:[X-(a+b+c)]=b:d;
解之可得:X=(ad/b)+a+b+c