(( i will give 25 points and brainy from right answers ( answer ) )

(use first image) 1. which are the correct classification for the polygon?

a. concave quadrilateral

b. convex quadrilateral

c. concave pentagon

d. convex pentagon

2. what is the sum of the measures of the interior angles of a 11-gon?

a. 1620°

b. 1800°

c. 1980°

d. 2340°

3. what is the measure of each interior angle of a regular 24-gon?

a. 150°

b. 165°

c. 180°

d. 195°

4. what is the measure of each interior angle of a regular 18-gon?

a. 160°

b. 180°

c. 190°

d. 200°

( answer all