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Exploring Isosceles and Equilateral Triangles: Geometry Theorems and Problem Solving

Learn how to prove congruence theorems, analyze corresponding parts, find triangle measures, and solve problems. Understand why ABC is isosceles, and solve for x and y in m∠L = y, given x = 90.

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Exploring Isosceles and Equilateral Triangles: Geometry Theorems and Problem Solving

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  1. Isosceles and Equilateral Triangles Geometry 4.0 – Students prove basic theorems involving congruence. Geometry 5.0 – Students prove that triangles are congruent, and they are able to use the concept of corresponding parts of congruent triangles. Geometry 12.0 - Students find and use measures of sides and of interior and exterior angles of triangles to solve problems.

  2. Explain why ABCis isosceles.

  3. Suppose that mL = y. Find the values of x and y. X = 90

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