Question

jo is making a stained - glass window, and she wants each adjacent piece of glass to be a different color. she wants to use just four colors: yellow, orange, purple, and red. if the center circle is yellow, and two other pieces are colored as shown, what color does piece a need to be?

Explanation:

1. Identify used colors: yellow (center), orange, purple. Remaining color is red.
2. Verify adjacency: Piece A is adjacent to yellow (center) and orange, neither of which is red, so it meets the "adjacent pieces must be different colors" rule.

Answer:

Red