How many different types of triangles can your class name? A discovery lesson guides learners through an exploration of the different triangle types and the relationships between their angles and sides. Using coordinate geometry, scholars plot points that create triangles of given side lengths. 

Concepts

isosceles triangles, equilateral triangles, right triangles, perimeter of triangles, triangles

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Additional Tags

math

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Instructional Ideas

• Incorporate as a discovery lesson on the relationship between sides and angles of triangles

Classroom Considerations

• Requires the use of construction tools
• Expects previous experience with coordinate geometry

Pros

• Gives clear instructions, making it easy for pupils to read and complete independently
• Answer key provides solutions and explanations 

Cons

• None

Common Core

HSG-CO.C.10