Question

find x
will mark as brainliest

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Answer 1

As per the statement

the external angle is the sum of the two pposite angles of te interior angle of the triangle

so ,

105°= x+45°

x=105°-45°

x=60°

hope it helps you

Answer 2

As straight angle is 180 degree

So, (180degree - 105 degree)
= 75 degree
That means angle ACB is 75 degree

So, (45degree +75 degree)
=120 degree
Sum of angle is 180 degree
Now,
(180- 120) degree
= 60degree
Sorry my keyboard does have sign of degree and angle that’s why I spell that everywhere.