Respuesta :

suspho

Answer:

A) 60°

B) 45°

C) 50°

Step-by-step explanation:

the sum of the internal angles of a triangle is 180 °, so the first is an equilateral triangle, so all angles are 60 °.

the second is a right isosceles triangle with an angle of 90 ° and two angles of 45 °.

the third is a right triangle with an angle of 90 °, one from 40 ° and x is 50 °.

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