Week 15 Polygon Angles Flashcard

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

How many sides does a nonagon have?

Back

9 sides.

Front

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

Back

1260 degrees.

Front

What are the properties of opposite sides in a parallelogram?

Back

Opposite sides are congruent.

Front

What are the properties of opposite angles in a parallelogram?

Back

Opposite angles are congruent.

Front

What is the sum of the exterior angles of any polygon?

Back

360 degrees.

Front

What is the sum of the exterior angles of a pentagon?

Back

360 degrees.

Front

What type of polygon is a parallelogram?

Back

A quadrilateral.

Front

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

Back

Interior angle + Exterior angle = 180 degrees.

Front

How many degrees are in each exterior angle of a regular pentagon?

Back

72 degrees.