The sum of two numbers will be zero when you have the same number and one is positive and one is negative. For example 1 + -1= 0
Let there be x sides.
180(x-2)/x=11*360/x
180(x-2)=11*360
x-2=11*2
x-2=22
x=24
the polygon has 24 sides.
Three and Six are the only vertical angles shown above. Hope this helps. :P
To convert celsius t fahrenheit, multiply the celsius number by 1.8 FIRST. Then you add 32 to it after.
-35 x 1.8 + 32 = -31
