Respuesta :

Answer:

The value of x = 70° ,

Right option is  :     A . 70°

Step-by-step explanation:

We have given one triangle,

One angle of triangle = 70°

Another angle of triangle  = 35°

we need to find the third angle (let the third angle be x).

Since sum of angle of triangle is 180°

So, Sum of all three angles = 180°

i.e      70° + 35° + x = 180°

or       105° + x = 180°

or          x = 180° -  105°

or          x = 75°

Hence the value of x = 70°

Answer:

x = 75°

Step-by-step explanation:

From question diagram, we observe that

Two angles of a triangle is given.we have to find the third angle.

Since, we know that the sum of angles is 180°.

the value of first angle = 35°

the value of second angle = 70°

the value of third angle = x = ?

hence, we can write

35° + 70° + x = 180°

105°+x = 180°

Adding  -105° to both both sides of above equation,we get

-105° + 105° + x = -105° + 180°

x = 75° which is the answer.

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