Question

Question #2b4d8

Answer 1

The sum of interior angles `S` of a polygon of `n` sides is given
the following relation.

`S= (n-2)` straight angles

(1) when `S= 7` straight angles

then

`7= (n-2)`

`=>n=9`

(2) when `S= 8" right angles" = 4 " straight angles"`

then

`4= (n-2)`

`=>n=6`