Interior Angle Sum of Polygons

Front

What is the sum of the angle measures in a triangle (3 sides)?

Back

180°

Front

What is the formula to find the interior angle sum of any polygon?

Back

(number of sides - 2) x 180

Front

What is the sum of the angle measures in a quadrilateral (4 sides)?

Back

360°

Front

What is the sum of the angle measures in a pentagon (5 sides)?

Back

540°

Front

What is the sum of the angle measures in a hexagon (6 sides)?

Back

720°

Front

What is the sum of the angle measures in a heptagon (7 sides)?

Back

900°

Front

What is the sum of the angle measures in an octagon (8 sides)?

Back

1080°

Front

What is the sum of the angle measures in a nonagon (9 sides)?

Back

1260°

Front

What is the sum of the angle measures in a decagon (10 sides)?

Back

1440°

Front

If the sum of the interior angles in a polygon is 1800°, how many sides does it have?

Back

12 sides