A triangles measure = 180
45 + 35 + x = 180
80 + x = 180
x = 100
Hope this helps!
Yes, it’s true, because it’s more than 3, but less than 4
360 degrees in a circle
360 degrees minus 90 degrees (the right angle of the square) = 270 degrees
270 degrees divided by 2 = 135 degrees
f = 135 degrees