What do you notice about the two angles when you slide the two sliders? What do complementary angles add up to?
What do you notice about these two angles? What do supplementary angles add up to?
[size=150][u]Vertical angles[/u] are angles that are across from each other when two lines intersect. [/size]
What do you notice about the angle measures of vertical angles?
[size=150]A [u]transversal[/u] is a line that intersects two parallel lines.[/size]
First, check the "Show Corresponding Angles" box. What do you notice as you slide the first slider?
Now, check the "Show Alternate Interior Angles" box. What do you notice as you slide the first slider?
Lastly, check the "Show Alternate Exterior Angles" box. What do you notice as you slide the first slider?