Parallel Lines and Transversals

This video lesson covers the angles formed when parallel lines are intersected by a transversal. It introduces key vocabulary such as parallel, transversal, perpendicular, and vertical angles. The lesson explains the properties of supplementary, corresponding, interior, and exterior angles, and provides practice problems to reinforce understanding. The video concludes with a discussion on patterns in angle measures and encourages students to recognize these patterns.

What is a transversal line?

• A line that intersects two or more lines

• A line that is parallel to another line

• A line that forms a right angle

• A line that is equidistant from another line

Which of the following statements is true about vertical angles?

• They are always supplementary

• They are always congruent

• They are always adjacent

• They are always complementary

What is the sum of the measures of supplementary angles?

• 360 degrees

• 270 degrees

• 180 degrees

• 90 degrees

How are corresponding angles identified in a diagram?

• They are on the same side of the transversal and in matching corners

• They are on opposite sides of the transversal and in matching corners

• They are on opposite sides of the transversal and in opposite corners

• They are on the same side of the transversal and in opposite corners

Which angles are formed outside the parallel lines when intersected by a transversal?

• Interior angles

• Exterior angles

• Vertical angles

• Supplementary angles

What is true about alternate interior angles?

• They are always adjacent

• They are always supplementary

• They are always congruent

• They are always complementary

Which of the following is true about alternate exterior angles?

• They are always adjacent

• They are always complementary

• They are always supplementary

• They are always congruent

If angle 1 is 121 degrees, what is the measure of its corresponding angle?

• 90 degrees

• 180 degrees

• 121 degrees

• 59 degrees

What pattern is observed when parallel lines are intersected by a transversal?

• Each angle has one of two possible measures

• All angles are supplementary

• Each angle is complementary to the next

• All angles are equal

What happens to the angles when a transversal is perpendicular to parallel lines?

• All angles are 60 degrees

• All angles are 180 degrees

• All angles are 45 degrees

• All angles are 90 degrees