A. stop sign b. tripod c. computer screen d. school crossing sign e. the dome of a capitol building f. a cell in a honeycomb g. describe the difference between a concave and convex polygon. h. what is a regular polygon? i. how do you calculate the sum of the interior angles?
see below for classification
concave: angles less than 180°
regular: sides and angles congruent
sum = 180°(n -2)
A) The given shapes are classified and described in the attachment. (A polygon is a plane figure, so a "tripod" and a "dome" are not polygons.)
B) A convex polygon has interior angles that measure less than 180°. A concave polygon has one or more reflex angles.
C) A regular polygon has all angle measures congruent, and all side lengths congruent.
D) The sum of interior angles can be calculated from the formula ...
angle sum = 180° · (n -2) . . . . where n is the number of sides
i do not know the answer i am sorry