To work this out, you find out how many triangles can fit into the shape.
To do this, you take the number of sides and subtract it by 2.
So in a polygon with 11 sides, there are:
9 triangles (<em>11 - 2 = 9)</em>
Remember, the total number of angles in one triangle is <u>180 </u>degrees.
So to work out the total number of angles in a polygon, you multiply the <u>number of triangles</u> in it by <u>180</u>.
So the total sum of interior angles in a polygon with 11 sides is:
180 x 9 = 1620 degrees <em>(180 degrees times number of triangles)</em>
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Answer:
1620 degrees
The answer is 530. I’m pretty sure
To solve for the total number of 12 – flag signals Sally
can make, we need to make use of the formula:
total flags = d! / (a! b! c!)
Where,
d = is the number of flags to create a signal = 12
a = number of red flags = 5
b = number of green flags = 3
c = number of white flags = 4
We can observe from the equation that the individual
number of flags is factored out (or divided from) that is because all the 5 red
flags are similar, all the 3 flags are similar and all 4 flags are similar.
Going back into the equation, by substituting and
calculating:
total flags = 12! / (5! 3! 4!)
total flags = 27,720
<span>Therefore there are about 27,720 different 12-flags
signals.</span>
Write it as a mixed fraction 7/5 = 1 2/5
It means that the two vectors are perpendicular or orthogonal