Question

triangulo isosceles si hay un angulo de 120 grados cuales serian las otras medidas ayuda!!!

Answer 1

En triángulos isósceles dos de sus ángulos son congruentes, si tenemos que el primer ángulo es de 120° y la suma de los ángulos internos de un triángulo es de 180°, por consiguiente:

120° + Ángulo A + Ángulo A´ =180°

Como los ángulos que faltan son congruentes, es decir miden lo mismo, tenemos que:

Ángulo A + Ángulo A´ = 180° - 120° = 60°

Cada ángulo que falta, como miden lo mismo, entonces será la mitad lo que lo falta a los 120° para llegar a 180°, que es de 60°.

R= 60°/2 = 30°
      Cada ángulo que falta mide 30°

Answer 2

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Explicación paso a paso:

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