13. Combien de carrés et triangles
Source: www.ukmt.org.uk
Solution:
Il y a 6 carrés 1x1 et 1 carré 2x2 = 7 carrés
Il y a 4 triangles 1x1, 3 triangles 2x2, 2 triangles 3x3 et 1 triangle 4x4 = 10 triangles
Source: www.ukmt.org.uk
Solution:
Il y a 6 carrés 1x1 et 1 carré 2x2 = 7 carrés
Il y a 4 triangles 1x1, 3 triangles 2x2, 2 triangles 3x3 et 1 triangle 4x4 = 10 triangles