Question

find the sum of all interior angle of a regular hexagon

Answer 1

sum of all the interior angle of any polygon=(n-2)×180°,

therefore

sum of all the angles of a regular polygon=(6-2)×180°=4×180°=720°

Answer 2

It's 720...........

The formula is (n-2)×180
=(6-2)180
=4×180

=720..........