# puzzle maths jeux lbpuzzle mathiratti heptagon nowords olympics2020


In this rectangle, the two marked angles are equal. We have a + b = c. What fraction is shaded ? Find the ratio a : b : c ? 😀

13 30
2019-11-20


Squares and semicircle.
What fraction of the blue square is shaded in green ? 😀

17 44
2019-08-22