Roy used basic geometric shapes, lines, and black outlines with primary colors in a pop art style. His artwork featured lines, shapes, dots, and black outlines using bold primary colors common in pop art. The key elements in Roy's pop art style included primary colors, lines, shapes, dots, and black outlines.

2. Roy used:
Lines
Shapes
Black outlines
Primary colors

3. Lines
Shapes
Black outline
Primary colors
Dots

4. Bold

5. POP ART STYLE
Primary colors
Lines
Shapes
Dots
Black outline