Retake Parallel lines and Angles in Polygons

Front

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

Back

1260°

Front

What is the measure of ONE interior angle in a regular hexagon (6 sides)?

Back

120°

Front

What type of angle pair are ∠1 and ∠3 if they are adjacent and form a straight line?

Back

linear pair angles

Front

What type of angle pair are ∠1 and ∠5 if they are on the same side of the transversal and in different parallel lines?

Back

corresponding angles

Front

How do you calculate the sum of the interior angles of a polygon?

Back

(n-2) × 180°, where n is the number of sides.

Front

What is the measure of each interior angle in a regular polygon with 8 sides?

Back

135°

Front

What is the definition of alternate interior angles?

Back

Angles that are on opposite sides of the transversal and inside the two parallel lines.

Front

What is the definition of vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What is the measure of each exterior angle in a regular pentagon (5 sides)?

Back

72°

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

They are equal.