Question Number 197422 by hardmath last updated on 17/Sep/23
Answered by mr W last updated on 23/Sep/23
Commented by mr W last updated on 23/Sep/23
$$\mathrm{2}{x}+\mathrm{60}°=\mathrm{180}° \\ $$$$\Rightarrow{x}=\mathrm{60}° \\ $$
Answered by HeferH last updated on 17/Sep/23
Commented by HeferH last updated on 17/Sep/23
$$\mathrm{60}°+\mathrm{90}°+\mathrm{90}°+\mathrm{2}{x}\:=\:\mathrm{360}° \\ $$$$\:\mathrm{2}{x}\:=\:\mathrm{120}° \\ $$$$\:{x}\:=\:\mathrm{60}° \\ $$