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Source: Magoosh
twelve points are spaced evenly around a circle, lettered from A to L. Let N be the total number of isosceles triangles, including equilateral triangles, that can be constructed from three of these points. A different orientation of the same lengths counts as a different triangle, because a different combination of points from the vertices. What is the value of N?
A. 48
B. 52
C. 60
D. 72
E. 120
The OA is B
twelve points are spaced evenly around a circle, lettered from A to L. Let N be the total number of isosceles triangles, including equilateral triangles, that can be constructed from three of these points. A different orientation of the same lengths counts as a different triangle, because a different combination of points from the vertices. What is the value of N?
A. 48
B. 52
C. 60
D. 72
E. 120
The OA is B
