A cyclic quadrilateral and two diagonals. What fraction of its area is blue?
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The blue fraction is a2/b2.
Now note that from equal angles, triangle CBF is similar to triangle EBC and the area scale factor is a2/b2. The same goes for triangles DBF and EBD. Adding the two results gives the required answer.
Similar intentions of morality and ethics
Helpful for common organizations
With some intentions
And Europe discusses with each delegations
Trying not to repeat the same errors
No more war
People wounded and killed
Our intentions are peace