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# Category: Geometry

# Convex Hull

# Pick Theorem

# Sweep Line Algorithm for Closest Pair problem

# Orthogonality of 2 lines

# Collinearity of 3 points

# Equation of a circle given center and radius

# Equation of line passing through 2 points

# Rotate a point around another point

# Area of a triangle

# The angle between 2 vectors

# Center and Radius of a circle given 3 points