What's Special?
- The top slider changes the slope of the transversal. (The way it is tilted.)
- The bottom slider changes the slope of the parallel lines.
- Check the box next to the angle pair that you would like to see.
- When the angles are the same color, that means they have the same measure.
In the diagram, select "Show Corresponding Angles." Which is/are true about what happens as you move the sliders?
In the diagram, select "Show Alternate Interior Angles." Which is/are true about what happens as you move the sliders?
In the diagram, select "Show Alternate Exterior Angles." Which is/are true about what happens as you move the sliders?
In the diagram, select "Show Same-Side Interior Angles." (This is the same as Consecutive Interior Angles.) Which is/are true about what happens as you move the sliders?
Alternate Interior
Move points A, E, or D in the diagram above. 1. What do you notice about the angle measures? 2. What generalization can we make about alternate interior angles when parallel lines are cut by a transversal?
Alternate Exterior
Move points A, E, or D in the diagram above. 1. What do you notice about the angle measures? 2. What generalization can we make about alternate exterior angles when parallel lines are cut by a transversal?