Straight Angle -- from Wolfram MathWorld

A straight angle is an angle equal to 180 degrees=pi radians. Two right angles make a straight angle, and two straight angles make a full angle.

Lattice of Eisenstein integers. (Downloaded from

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Line -- from Wolfram MathWorld, line

How to Calculate Angle Size

Vanishing Point -- from Wolfram MathWorld

Regular N-gonal Right Antiprism: Application of HCR's Theory of

Line -- from Wolfram MathWorld, line

Excluded RuboCop rules still show up in VSCode? · Issue #57

Line -- from Wolfram MathWorld, line