Which polygon is always irregular? Square Trapezoid Triangle Heptagon Name the polygons that satisfy the conditions. a. interior angle sum = 900o b. Exterior angle = 40o c. Interior angle = 120o heptagon ? nonagon ? hexagon ? What is the measure of an exterior angle of a regular 17-gon? Round to the tenths place! Which figure will tessellate alone (without other figure)? A B C How many sides does a regular polygon have if each interior angle measures 144o? Laura wants to pick a tiling for her kitchen backsplash. If she wants 3 tiles to fit together perfectly at each vertex, which tiling should she choose? C A D B Find the value of x. x = Find the value of x. x = The pentagon formed below is composed of 5 rays. What is the degree measure of angle x? 108 112 72 96 Select all the concave figures. C A B D |