Special Right Triangles
Special Right Triangles. Lesson 9.7. 30 º-60º-90º Triangles. Theorem 72 : In a triangle whose angles have the measures of 30 º , 60 º , and 90 º , the lengths of the sides opposite these angles can be represented by x, , and 2x respectively. (30 º-60º-90º-Triangle Theorem). 3 0 º. 2x.
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