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Angles created by a transversal

A transversal is a line that passes through two parallel lines.
These three lines make several angles.
In the applet below investigate the relationships between these angles.
Read the instructions under the applet.

Made by Antonija Horvatek with the GeoGebra program

Start by clicking the buttons down in the applet.
Use the check boxes and sliders.
You can move points on the lines as well.

Two parallel transversals

In the applet below investigate relationships between the angles created by two parallel transversals.

Made by Antonija Horvatek with the GeoGebra program

Start by clicking the buttons down in the applet.
Use the check boxes and sliders.
You can move points on the lines as well.

Note:

If applets don't work correctly, try to use another web browser (Chrome, Mozilla Firefox, Internet Explorer...) or change some properties in the web browser you use. Also, you can try upgrade your web browser.