Learn how to determine the missing variable given an isosceles triangle

The video tutorial demonstrates how to solve for a missing angle in an isosceles triangle. It begins by identifying the properties of isosceles triangles, such as equal sides, and then sets up an equation to find the missing measure. The process involves recognizing congruent sides, forming an equation, and solving for the variable X. The tutorial concludes with the solution, showing that X equals 12.

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