Respuesta :

I think there's about 36 triangles there

s1m1
From top down ,
Row 1 : 1 triangle
Row 2: 3 triangles = 2+1
Row 3: 5 triangles = 3+2
Row 4: 7 triangles = 4+3
.
Row 6: 6+5 =11 triangles

Answer 11 triangles