Answer:
35°
Step-by-step explanation:
Given that the triangle is a right triangle, this means that at least one of the angles has to be equal to 90°. The total sum of angles in a triangle add up to 180°.
So, it would be
55° + 90° + x = 180°
145° + x = 180°
x = 180° - 145°
x = 35°
