Answer:
x=90°
Explanation:
As in the angle, there is a box giving us info that x has to be 90°.
But to be sure that there is no mistake we have to do the following:
- Look at all the other angles (see what kind of angles they are).
- Add all the angles up to 360°( in this case as the angle we are looking for is on a straight line which gives straight line=180°).
- Checking and comparing the two answers.
So we are looking at the surroundings of angle x (which is on a straight line) we see that it is a right angle and look at the angle on the same line is a right angle too.
The equation right angle=90° helps us see that because there are two right angles on a 180° line (90°+90°+180°).
Therefore the answer is:
x=90°