The sum of the angles is 900 degrees - and the polygon does not need to be convex.
A convex polygon with congruent sides and congruent angles is a regular polygon.Some regular pilgrims have specific names: Equilateral triangle and square
with all sides equal (congruent) AND all angles equal (congruent). In these circumstnces the adjective "convex" is redundant.
Convex polygons with congruent sides and congruent angles are called regular polygons.
That doesn't have a special name. If all the angles are also congruent (and convex), then it is called a regular polygon.
That is called a regular polygon.
900 degrees. And it does not have to be convex.
No. In a convex polygon the sum of the interior angles is (n-2)*180 deg where n is the number of interior angles. In a non-convex polygon this is not necessarily true.