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Classifying triangles

An explanation of how to classify triangles by looking at their angles and lengths of sides. The resource includes explanations, videos, worked examples and questions.

Additional details
Year level(s)	Year 7
Audience	Teacher
Purpose	Teaching resource, Student task
Format	Web page
Teaching strategies and pedagogical approaches	Explicit teaching
Keywords	triangles, length of sides, angles
Curriculum alignment
Curriculum connections	Critical and creative thinking
Strand and focus	Space
Topics	Angles and geometric reasoning
AC: Mathematics (V9.0) content descriptions	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
Numeracy progression	Understanding geometric properties (P4, P6)
Copyright details
Organisation	CK-12
Copyright	© CK-12 Foundation 2022. Free-for-education material.