Question

determine o valor x do triângulo a seguir​

Answer 1

$\sf x + 45 {}^{ \circ} + 90 { }^{ \circ} = 180 {}^{ \circ} \\ \\ \\ \sf x + 135 {}^{ \circ} = 180 {}^{ \circ} \\ \\ \\ \sf x = 180 {}^{ \circ} - 135 {}^{ \circ} \\ \\ \\ \sf {\color{red}x = 45 {}^{ \circ} }$

Att: Nerd1990