Question

Calcular "x"
a) 10°
b) 20°
c) 30°
d) 40°

Answer 1

Respuesta:

El triángulo es isósceles:

d) x = 40°

Explicación paso a paso:

=> 30° + 2x + 40° + 30° = 180°

=> 100° + 2x = 180°

=> 2x = 80°

=> x = 40°