Understanding Parallel Lines and Transversals

What is a transversal in geometry?

• A line that intersects two or more lines

• A line that is perpendicular to another line

• A line that is parallel to another line

• A line that forms a right angle with another line

How can you visually confirm that two lines are parallel?

• By checking if they intersect

• By looking for arrows on the lines

• By measuring the distance between them

• By ensuring they are the same length

What is necessary to prove that two lines are parallel?

• A calculator and a graph

• A compass and a straightedge

• Solid notation or additional proof

• A ruler and a protractor

If two lines are parallel, what can be said about their alternate interior angles?

• They are complementary

• They are supplementary

• They are equal

• They are different

In the problem discussed, what is the value of x if the lines are parallel?

• 15

• 20

• 25

• 10