Copy of Copy of Naming Angle Positions
Definition: A transversal is a line that intersects 2 other lines at 2 distinct points.
In the applet, the dashed line below is a transversal. (Actually, each of the three lines displayed below is a transversal.)
When a transversal intersects 2 other lines, special names are given to certain pairs of angles.
These angle pairs are called corresponding angles, alternate interior angles, alternate exterior angles, same-side interior angles, and same-side exterior angles.
Explore these angle pairs within the applet below. Then, answer the questions that follow.
Angle pair relationships
Questions:
1) What does the term "same-side" mean in the phrases "same-side interior angles" and "same-side exterior angles"?
the angle is on the same side of the transversal line.
2) What does the term "alternate" mean in the phrases "alternate interior angles" and "alternate exterior angles"?
it means to rotate over the transversal line.
3) Which of the four displayed angles would be considered "interior" angles? Why is this?
both same side interior and alternate interior.
4) Which of the four displayed angles would be considered "exterior" angles? Why is this?
same side exterior angles because they are located at the exterior.
5) How would you describe, in your own words, what it means for a pair of angles to be described as "corresponding angles"?the angles have to make a F shape and never face each other and point at the same direction.