Answer: 105°
Explanation:
The sum of the total angle in this quadrilateral (a shape with 4 angles) will be 360°.
Now we have to add the angles given together with x to get the value of x. This will be:
45° + x° + x° + x° = 360°
45° + 3x = 360°
3x = 360° - 45°
3x = 315°
x = 315° / 3
x = 105°
