Answer:
x = 35
Step-by-step explanation:
Since we know that this is a right angle, we know that the total has to equal 90 degrees. From there, we can make an equation:
(x+10) + ( x+10) = 90
2x +20 = 90
2x = 70
x = 35
Hope this helped and pls mark as brainliest!
~Luna
