Retake Parallel lines and Angles in Polygons

Front

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

Back

The sum of the interior angles of a polygon with n sides is (n-2) × 180°.

Front

What is the measure of each exterior angle of a regular polygon with n sides?

Back

Each exterior angle of a regular polygon with n sides is 360° / n.

Front

What type of angle pair are two angles that are on the same side of a transversal and inside the two lines?

Back

These are called alternate interior angles.

Front

What is the measure of the missing angle X if the other angles are 60° and 90°?

Back

Angle X = 180° - (60° + 90°) = 30°.

Front

What is a linear pair of angles?

Back

A linear pair of angles are two adjacent angles that form a straight line, summing to 180°.

Front

How many sides does a nonagon have?

Back

A nonagon has 9 sides.

Front

What is the measure of the interior angle of a regular pentagon?

Back

The measure of each interior angle of a regular pentagon is 108°.

Front

What type of angles are formed when two lines intersect?

Back

The angles formed are called vertical angles.

Front

If two parallel lines are cut by a transversal, what can be said about the corresponding angles?

Back

Corresponding angles are equal.

Front

What is the measure of the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180°.