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Parallel lines and the angle sum of a triangle
From the AMSI ‘Supporting Australian Mathematics Project’, this resource gives detailed explanations for teachers and students of the curriculum content, worked examples and assessment questions.
Additional details 

Year level(s)  Year 7 

Audience  Teacher 
Purpose  Content knowledge, Teaching resource, Student task 
Format  Web page 
Teaching strategies and pedagogical approaches  Explicit teaching 
Keywords  Angles, Parallel, Cointerior, Alternate, Triangle, Interior 
Curriculum alignment 

Curriculum connections  Critical and creative thinking, Numeracy 
Strand and focus  Space 
Topics  Angles and geometric reasoning 
AC: Mathematics (V9.0) content descriptions 
AC9M7M04
Identify corresponding, alternate and cointerior relationships between angles formed when parallel lines are crossed by a transversal; use them to solve problems and explain reasons
AC9M7M05
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 
Numeracy progression 
Understanding geometric properties (P6)

Copyright details 

Organisation  AMSI 
Copyright  © The University of Melbourne. Creative Commons BYNCND 3.0. 
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