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 additional information is needed to prove that two angles are congruent?

Back

To prove that two angles are congruent, you may need to establish relationships such as parallel lines or equal measures.

Front

If ∠1 is supplementary to ∠2, what can be said about their measures?

Back

The measures of ∠1 and ∠2 add up to 180 degrees.

Front

What is the significance of the statement 'l ∥ m'?

Back

The statement 'l ∥ m' indicates that lines l and m are parallel, which affects the relationships of angles formed by transversals.

Front

What is the definition of vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect; they are always congruent.