1. Допиши и дорисуй. a) Δ΄. + ΔΑΔ:: =

1. Count the triangles and dots in the first part: 1 triangle, 2 dots. Count the triangles and dots in the second part: 3 triangles, 2 dots. The total is 4 triangles and 4 dots.

2. The equation is: 1 triangle, 2 dots + 3 triangles, 2 dots = 4 triangles, 4 dots.

3. Fill in the blanks: 1 д 2 е + 3 д 2 е = 4 д 4 е.