Concave,convex and regular polygons

Sort the descriptions into the correct category. Concave A shape that caves inward A star shape Cannot use the formulas on our chart for these types of polygons Convex A shape that does not cave inward A triangle Can use the formulas on our chart for these types of polygons NOT A POLYGON A pretzel shape A circle A shape that has curves Match the correct formulas for polygons. Sum of Exterior Angles 360 One Exterior Angle in a Regular Polygon 360 Sum of Interior Angles (n-2) * 180 One Interior Angle in a Regular Polygon [(n-2) * 180] / n convex convex concave concave concave convex heptagon decagon octagon decagon nonagon heptagon Solve for x. Click on the blue dot and enter the number that x equals. Do not type "x = ", just the value. 83 17 8 16 13 3 120 144 140 147.3 150 128.6