Retake Parallel lines and Angles in Polygons

Front

What are parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.

Front

What is an angle?

Back

A figure formed by two rays, called the sides of the angle, sharing a common endpoint called the vertex.

Front

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

Back

(n - 2) × 180°.

Front

What is an exterior angle of a polygon?

Back

An angle formed by one side of a polygon and the extension of an adjacent side.

Front

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

Back

Divide 360° by the number of sides (n): 360°/n.

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines cut by a transversal.

Front

What are alternate interior angles?

Back

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

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always equal.

Front

What is the relationship between interior and exterior angles?

Back

The interior angle and its corresponding exterior angle are supplementary, meaning they add up to 180°.

Front

What is a regular polygon?

Back

A polygon with all sides and all angles equal.