Final answer:
Tertiary colors are created by mixing one primary color with one secondary color.
Step-by-step explanation:
Tertiary colors are created by mixing one primary color with one secondary color. Therefore, the statement 'A tertiary color is created when you mix two secondary colors' is false.
Primary colors are red, yellow, and blue. Secondary colors are orange, green, and violet. Tertiary colors are obtained by mixing one primary color with one secondary color, resulting in hues such as red-orange or yellow-green.
For example, to create a tertiary color like red-orange, you would mix red (a primary color) with orange (a secondary color).