Question

What is the value of X for this triangle?

Answer 1

Answer = 50°

-A triangle adds up to 180°

-A straight line adds up to 180°

Because 105° is on the outer side of that line on the triangle,

We must substract 180° from 105° to get the angle on the inside of the triange (cause it’s a straight line)

which would be 75°

Now add up 75° and 55° = 130°

Since a triangle adds up to 180°,

180° - 130° = 50°

X = 50°

Answer 2

Hey Mate

Here is your answer

The Correct is 50° by exterior angle theorem.

Hope this helped u ;)