Step-by-step explanation:
[tex]x + 90 + 90 + 52 = 360 \\ \\ x + 232 = 360 \\ \\ x = 360 - 232 \\ \\ x = 128[/tex]
Answer:
128
quadrilaterals amount to 360 degrees and the 3 sides given come to 232, Then subtract 360 from 232 to get 128.
