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Interior and exterior angles of polygons

Study Slideshow

What is the sum of the measures of the interior angles of a pentagon?

540º

What is the sum of the measures of the interior angles of a 27-gon?

4500º

What is the measure of EACH interior angle of a regular octagon?

135º

What is the measure of EACH interior angle of a regular 20-gon?

162º

Five angles of a hexagon measure 119º, 129º, 104º, 139º, and 95º. What is the measure of the sixth angle?

134º

The sum of the interior angles of a polygon is 1620º. How many sides does the polygon have?

11 sides

The sum of the interior angles of a polygon is 3960º. How many sides does the polygon have?

24 sides

What is the sum of the measures of the exterior angles of a nonagon?

360º

What is the measure of EACH exterior angle of a regular 20-gon?

18º

If the exterior angle of a regular polygon measures 9º, how many sides does the polygon have?

40 sides

If the interior angle of a regular polygon measures 108º, how many sides does the polygon have?

5 sides

Find the value of x.

116º

Find the value of x.

94º

Solve for x.

x = 17

Find the measure of angle B.

79º

If the figure is a regular polygon, find the value of x.

x = 14