G3b – Alternate and corresponding angles on parallel lines

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Alternate and corresponding angles on parallel lines

Interactive GeoGebra activity: Alternate angles
Move point D around to see the how the pairs of alternate angles remain related.
With thanks to Simon Job, whose Alternate Angles worksheet is available here. Material modified and embedded here under the CC-BY-SA 3.0 license.
Interactive GeoGebra activity: Corresponding angles
Move point D around to see the how the pairs of corresponding angles remain related.
With thanks to Simon Job, whose Corresponding Angles worksheet is available here. Material modified and embedded here under the CC-BY-SA 3.0 license.
In the real world

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