Answer:
Step-by-step explanation:
Answer: 1st box- subtracting 8 from both sides
2nd box- -8
Step-by-step explanation:
Add them all up and if they add up to 180 then your side lengths are good
Answer:
Big square - unshaded = shaded
((8+4)X(10+5))-(10X8)=100
Answer: 100
Step-by-step explanation: