Shading and Fill Pattern Rules Flashcards

In a 3×3 matrix, all column 1 figures are fully black, column 2 figures are half-shaded, and column 3 figures are unshaded. The missing figure is in row 3, column 3. Which option correctly fills it?

Answer: Unshaded shape

Column 3 is always unshaded across every row, so the missing figure must have no shading.

Each row in a 3×3 matrix contains exactly one solid black, one white, and one gray figure. In row 3, column 1 is white and column 2 is black. What shade fills the missing column 3 cell?

Answer: Gray

Each row must contain exactly one of each shade, and gray is the only shade not yet used in row 3.

A matrix shows a diagonal shading band shifting one column to the right per row: row 1 shades the left section, row 2 shades the middle section. Which section is shaded in the missing row 3 cell?

Answer: Right section

The shaded band moves one position to the right per row, landing on the right section in row 3.

Fill patterns cycle through three types per row: row 1 is (vertical lines, horizontal lines, crosshatch); row 2 is (horizontal lines, crosshatch, vertical lines); row 3 is (crosshatch, vertical lines, ___)?

Answer: Horizontal lines

Each row shifts the fill-type sequence left by one position, so row 3's third cell completes the cycle with horizontal lines.

A matrix shows dots inside shapes: row 1 has 1, 2, 3 dots; row 2 has 2, 3, 4 dots; row 3 has 3, 4, ___ dots in the missing cell?

Answer: 5

Each row starts one dot higher than the previous and increments by one across columns, making row 3's third cell have 5 dots.

In a matrix, outer shapes are always shaded black while inner shapes are always white. The missing figure shows a black pentagon — what does it contain inside?

Answer: A white inner pentagon

The consistent rule across the matrix is that the inner shape is always white, regardless of the outer shape's color.