Respuesta :

Assuming that x and 88 are supplementary angles, the answer would be 92. Basically, if two angles are supplementary, they equal 180 degrees when added together. Complementary angles equal 90 degrees when added together.
A simple way is to memorize that a 4 sided shape's interior angles equal 360 so add 45+88+135= 268.
360-268= 92 so x=92