Question

if you add the angles in every triangle, do they add up to the name number?

Answer 1

When you add up the angles in a triangle their sum will always be 180 degrees.

Answer 2

Good?

Answer 3

For any other polygons, to find the sum you can use the following formula.
\[180\times(n-2)\]
The way it works is that you plug in the number of sides for n.
lets say you polygon is an Octagon- (it has 8 sides.)
so you plug in 8 for n
\[180\times(n-2)--->180\times(8-2)=180\times6=1080\]

Answer 4

Thanks Sol,