Answer: 
Step-by-step explanation:
The area of a square is 
Substituting d for x, you get 1/2x^2
Hope this helps <3
Answer:
measure of angle 3= 109
angle 2=71
angle 1=109
Step-by-step explanation:
a straight line =180
Answer:
X = 55
Step-by-step explanation:
If the angel is 90:
75 + 90 = 165
165 divided by 3 = 55
Answer:
If your trying to simplify then your answer would be 