Interior and Exterior Angles of a Polygon

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

What is the sum of the interior angles of a quadrilateral?

Back

360 degrees.

Front

If two angles of a quadrilateral are 108 and 102 degrees, what are the measures of the remaining two congruent angles?

Back

75 degrees each.

Front

How do you calculate the measure of an exterior angle of a polygon?

Back

The exterior angle is equal to the sum of the two opposite interior angles.

Front

What is the formula to find the sum of the interior angles of a polygon with n sides?

Back

(n - 2) × 180 degrees.

Front

If a polygon has 5 sides, what is the sum of its interior angles?

Back

540 degrees.

Front

What is the measure of each interior angle of a regular hexagon?

Back

120 degrees.

Front

What is the relationship between interior and exterior angles of a polygon?

Back

Interior angle + Exterior angle = 180 degrees.

Front

If one interior angle of a regular octagon is 135 degrees, what is the measure of its exterior angle?

Back

45 degrees.

Front

What is the measure of an exterior angle of a regular pentagon?

Back

72 degrees.