Topic 3&4 q.2

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart.

Front

What is a transversal?

Back

A transversal is a line that intersects two or more lines at different points.

Front

What does it mean for angles to be supplementary?

Back

Two angles are supplementary if the sum of their measures is 180 degrees.

Front

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

Back

Alternate interior angles are congruent when two parallel lines are cut by a transversal.

Front

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

Back

Corresponding angles are congruent when two parallel lines are cut by a transversal.

Front

What is the definition of congruent angles?

Back

Congruent angles are angles that have the same measure.

Front

What is the significance of angle relationships in proving lines are parallel?

Back

Angle relationships, such as congruence and supplementary angles, can be used to prove that lines are parallel.

Front

If ∠1 and ∠2 are supplementary, what can be inferred about the lines they are on?

Back

If ∠1 and ∠2 are supplementary and formed by a transversal, it suggests that the lines may be parallel.

Front

What additional information is needed to prove that ∠4≅∠5 if ∠1 is supplementary to ∠2?

Back

No additional information is needed to prove that ∠4≅∠5.

Front

What is the definition of a linear pair of angles?

Back

A linear pair of angles are two adjacent angles that form a straight line and are supplementary.