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Math
Geometry
Congruence and Triangles
Triangle Types and Properties
Triangle Inequalities
Right Triangles and the Triangle Inequality
Segment Is at Least as Long as Its Projections
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1
Let ℓ\ellℓ be a line of length π\piπ in the plane. Find the expected value of the length of the projection of ℓ\ellℓ along a line in a random direction.
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