Question Number 189955 by SEKRET last updated on 25/Mar/23
Answered by HeferH last updated on 26/Mar/23
Commented by HeferH last updated on 26/Mar/23
$$\mathrm{180}°−\mathrm{8x}\:=\:\mathrm{120}°\:−\mathrm{2x} \\ $$$$\:\mathrm{60}°\:=\:\mathrm{6x} \\ $$$$\:\mathrm{x}\:=\:\mathrm{10}° \\ $$