△ABC is an isosceles triangle. Each horizontal line is the bisector of two sides of a triangle. How long is MN¯¯¯¯¯¯¯? Triangle A B C. Side A C is horizontal and is 12 centimeters long. Four other horizontal segments are drawn inside the triangle creating increasingly smaller similar triangles. From bottom to top the segments are, starting on side A B and ending on side B C: segment D E, segment F G, segment H K, and segment M N.

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