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Parallel lines and related angles
This GeoGebra applet interactive allows students to move the lines and observe the changes to the angles in and around the parallel lines. The task reinforces mathematical vocabulary and asks students to draw conclusions about the intersection of the transversal and parallel lines.
|Year level(s)||Year 7|
|Teaching strategies and pedagogical approaches||Feedback, Mathematics investigation|
|Keywords||parallel lines, transversal, alternate angles, corresponding angles|
|Strand and focus||Space|
|Topics||Angles and geometric reasoning|
|AC: Mathematics (V9.0) content descriptions||
Identify corresponding, alternate and co-interior relationships between angles formed when parallel lines are crossed by a transversal; use them to solve problems and explain reasons
Demonstrate that the interior angle sum of a triangle in the plane is 180° and apply this to determine the interior angle sum of other shapes and the size of unknown angles
Understanding geometric properties (P6)
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