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The Geometer's warehouse

This website has been developed to provide a range of activities that demonstrate and explore geometric properties, based on the NSW curriculum. It covers a wide range of topics from the properties of geometric figures, angle relationships, Pythagoras' theorem, trigonometry and circle geometry.

Additional details
Year level(s)	Year 7, Year 8, Year 9, Year 10
Audience	Teacher
Purpose	Content knowledge, Student task, Teaching resource
Format	Interactive
Teaching strategies and pedagogical approaches	Explicit teaching, Questioning, Concrete Representational Abstract model
Keywords	angles, geometry, trigonometry, Pythagoras, circle
Curriculum alignment
Curriculum connections	Critical and creative thinking
Strand and focus	Space, Apply understanding, Build understanding
Topics	Angles and geometric reasoning, Pythagoras and trigonometry
AC: Mathematics (V9.0) content descriptions	AC9M7M04 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 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 AC9M7SP02 Classify triangles, quadrilaterals and other polygons according to their side and angle properties; identify and reason about relationships AC9M7M03 Describe the relationship between π and the features of circles including the circumference, radius and diameter AC9M8SP01 Identify the conditions for congruence and similarity of triangles and explain the conditions for other sets of common shapes to be congruent or similar, including those formed by transformations AC9M8SP02 Establish properties of quadrilaterals using congruent triangles and angle properties, and solve related problems explaining reasoning AC9M8M06 Use Pythagoras' theorem to solve problems involving the side lengths of right-angled triangles AC9M9M03 Solve spatial problems, applying angle properties, scale, similarity, Pythagoras' theorem and trigonometry in right-angled triangles AC9M10M03 Solve practical problems applying Pythagoras' theorem and trigonometry of right-angled triangles, including problems involving direction and angles of elevation and depression
Numeracy progression	Proportional thinking (P6, P7) Understanding geometric properties (P4, P6, P7) Understanding units of measurement (P9, P10)
Copyright details
Organisation	NSW Department of Education. Creative Commons BY 4.0.
Copyright	© State of New South Wales (Department of Education),2021. Creative Commons BY 4.0.