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.
Questions:
1) What does the term "same-side" mean in the phrases "same-side interior angles" and "same-side exterior angles"? it means that both of the angles will be located on the same side of the transversal.
2) What does the term "alternate" mean in the phrases "alternate interior angles" and "alternate exterior angles"? alternate is opposite sides of the transversal
3) Which of the four displayed angles would be considered "interior" angles? Why is this?
alternate interior angles and same -side interior angles is considered interior because in in the middle of the to lines which means its on the inside.
4) Which of the four displayed angles would be considered "exterior" angles? Why is this?
same-side exterior and alternate exterior angles are exterior because its located on the outside of the two lines
5) How would you describe, in your own words, what it means for a pair of angles to be described as "corresponding angles"?
corresponding angles are angles that are parallel