Respuesta:
B) 20°
Explicación paso a paso:
Si AB = AC el triángulo es isósceles y ∡B = ∡C = 4x
x + 4x + 4x = 180°
9x = 180°
x = 180° ÷ 9 = 20°
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Respuesta:
B) 20°
Explicación paso a paso:
Si AB = AC el triángulo es isósceles y ∡B = ∡C = 4x
x + 4x + 4x = 180°
9x = 180°
x = 180° ÷ 9 = 20°