I know diamonds I think don't you have to divide
Angle 4 would also be 135. the two on the top would add to 180, making a whole circle altogether that equals 360. so, you would do 180-135 = 45. angle 5 is 45. angle 7 would also be 135 because angle 4 and 7 are vertical angles.
Answer is B. 11. The square root is roughly 10.5, so you round up and get 11
Answer:
4x1
Step-by-step explanation: