Question

calcule a medida do ângulo X de cada triângulo


URGENTE!!!​

Answer 1

☑️ A soma dos ângulos internos de qualquer triângulo será igual a 180°

[a]

• $\small{x+75^{\circ}+50^{\circ}=180°}$

• $\small{x+125^{\circ}=\:\:180^{\circ}}$

• $\small{x=180^{\circ}-125^{\circ}}$

• $\red{\boxed{\small{x=55^{\circ}}}}$

[b]

• $\small{x+x+x+30^{\circ}=180^{\circ}}$

• $\small{3x=180^{\circ}-30^{\circ}}$

• $\small{3x=\:\:\:150^{\circ}}$

• $\small{x=150^{\circ}/3}$

• $\red{\boxed{\small{x=50^{\circ}}}}$