Use rectangles to find distances. Given a rectangle and three associated triangles, pupils determine the area of the triangles. Scholars know the three triangles have equal areas along with the perimeter of the rectangle and two other given lengths. 

Concepts

area of triangles, perimeter of rectangles, rectangles, similar triangles, triangles, length, properties of parallelograms, congruent triangles

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Additional Tags

math

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Instructional Ideas

• Encourage the class to write down everything they know about a problem to determine a solution path

Classroom Considerations

• Individuals should know how to solve complex linear equations
• Assumes the class is comfortable using algebra to solve geometry problems

Pros

• Answer key also highlights a wrong path learners may take
• Provides space to work the problem

Cons

• None

Common Core

HSA-CED.A.1 HSA-REI.B.4.a HSA-REI.B.4.b HSG-CO.C.11 MP1 MP4 MP5