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GeoGebra

Investigation 1

Autor:Liam Franz
On the diagram below, drag the point around to move the transversal line.

What do you notice?

Pauline was investigating angles between two parallel lines and wanted to find angles a and b on the diagram. Her friend Dominic suggested that she could measure them using a protractor.
Pauline was investigating angles between two parallel lines and wanted to find angles a and b on the diagram. Her friend Dominic suggested that she could measure them using a protractor.

How else could Pauline find angles a and b?

Write down what angle a and b would be in the box below.

What do you notice?

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