The negation isn't always true, as you can be unhappy while also not being hungry.
Answer:
Step-by-step explanation:
So put the 0-3 to the y2, 3-6 to the y4 and 6-9 to the y2
Explanation is in the file
tinyurl.com/wpazsebu
Answer:
I don't really know but one triangle is 180 degrees so two added together is 360 degrees...
but ohh I remembered
a=c+d (since a+b=180 and c+d+b=180)
e=g+h (since e+f=180 and g+h+f= 180)
and the fact is that c+d+g+h+b+f=the angle sum of quadrilateral PQRS
a+e+b+f= the angle sum of quadrilateral PQRS (by substitutions)
a+e+b+f=360 (four angles are from one origin so it's 360 degrees )
