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Math Example--Area and Perimeter--Triangles: Example 12

Math Example--Area and Perimeter--Triangles: Example 12

A right triangle with legs labeled x and y.

Topic

Geometry

Description

This example introduces algebraic expressions in the context of right triangle area calculations. The triangle's legs are labeled x and y, challenging students to express the area formula using these variables.

Integrating algebra into geometric problems is a key skill in advanced mathematics. This collection of examples helps teach this topic by demonstrating how algebraic expressions can represent right triangle dimensions. Students learn to manipulate these expressions within the area formula, deepening their understanding of both algebra and geometry.

Exposure to multiple worked-out examples is vital for students to fully grasp the interplay between algebraic expressions and geometric concepts. Each example builds on previous knowledge, gradually increasing in complexity. This approach helps students develop problem-solving skills and recognize patterns in mathematical relationships.

Teacher Script: "Let's examine this right triangle where we've used x and y to represent the legs. How does this change our approach to finding the area? Remember, we're still using our basic area formula, but now we're working with variables instead of specific numbers. Can someone suggest how we might express the area of this triangle algebraically?"

For a complete collection of math examples related to Area and Perimeter click on this link: Math Examples: Triangular Area and Perimeter Collection.

Common Core Standards CCSS.MATH.CONTENT.6.G.A.1, CCSS.MATH.CONTENT.7.G.B.6, CCSS.MATH.CONTENT.3.MD.D.8, CCSS.MATH.CONTENT.4.MD.A.3, CCSS.MATH.CONTENT.3.MD.C.7, CCSS.MATH.CONTENT.3.MD.C.7.A, CCSS.MATH.CONTENT.3.MD.C.7.B, CCSS.MATH.CONTENT.3.MD.C.7.C, CCSS.MATH.CONTENT.3.MD.C.7.D, CCSS.MATH.CONTENT.3.MD.C.5
Grade Range 6 - 12
Curriculum Nodes Geometry
    • Triangles
        • Area and Perimeter of Triangles
Copyright Year 2013
Keywords area, perimeter, triangle