Two congruent right triangles on a common baseline have an overlap of variable size. What is the proportion of the minimal area to the maximal area?

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## Solution

Minimal : maximal area is 2 : 3.

## Poem

La Sagrada Familia

Curves and columns

Compose this mystical poem of stone

Fascinating basilica

Tragic and sumptuous scenery

The towers light up the stars

The genius of Gaudi

Unfinished cathedral

That makes the visitor dream

Amidst the bellflowers and colonnades

A masterpiece