Calculate the number of figures in the first drawing by rows and then by columns.

The first drawing contains triangles.

By rows:

• The first row has 4 red triangles.
• The second row has 4 yellow triangles.
• The third row has 4 blue triangles.

By columns:

• The first column has 3 triangles (1 red, 1 yellow, 1 blue).
• The second column has 3 triangles (1 red, 1 yellow, 1 blue).
• The third column has 3 triangles (1 red, 1 yellow, 1 blue).
• The fourth column has 3 triangles (1 red, 1 yellow, 1 blue).

Total figures in the first drawing:

• By rows: 4 + 4 + 4 = 12 triangles.
• By columns: 3 + 3 + 3 + 3 = 12 triangles.