
The figure shows a right-angled triangle ABC with a shaded triangle BDE.
AD = DB
CE:EA = 1:2
What fraction is shaded?
Note: The answer is 1/3, but why?
Source: ?
The figure shows a right-angled triangle ABC with a shaded triangle BDE.
AD = DB
CE:EA = 1:2
What fraction is shaded?
Note: The answer is 1/3, but why?
Source: ?