Using Alternate Interior Angles to Find the Missing Measure of an Angle

The video tutorial covers the concept of transversals and their interaction with parallel lines. It explains the definitions and properties of interior and exterior angles, focusing on alternate interior angles. The teacher emphasizes that alternate interior angles are equal when lines are parallel, reinforcing the importance of understanding these geometric principles.

What is a transversal line?

• A line that does not intersect any other line

• A line that is parallel to another line

• A line that intersects two or more lines

• A line that is perpendicular to another line

How are interior angles positioned in relation to a transversal?

• On the same side of the transversal

• On the exterior of the parallel lines

• On alternating sides of the transversal

• On the inside of the parallel lines

What do we call angles that are on alternating sides of a transversal?

• Vertical angles

• Corresponding angles

• Alternate interior angles

• Supplementary angles

When lines are parallel, how do alternate interior angles relate to each other?

• They are complementary

• They are equal

• They are different

• They are supplementary

What is the measure of alternate interior angles when the lines are parallel?

• They are always 180 degrees

• They are equal to each other

• They are always 45 degrees

• They are always 90 degrees