What could n be if n> 6 and the regular n-sided polygon tessellates on its own.

1

Step-by-step explanation:

This condition is met for equilateral triangles, squares, and regular hexagons. ... (1) We can easily prove that there are only three regular polygons ( n = 3 , 4 , 6 ) which tessellate the plane with one polygon

i think it is x = 1.2

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11