Geometry and Mensuration — Formula Sheet
XAT · Quantitative Ability & Data Interpretation
Free Geometry and Mensuration formula sheet for XAT Quantitative Ability & Data Interpretation 2026 — all important formulas, equations, and constants for quick reference.
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Important formulas and equations from Geometry and Mensuration for XAT Quantitative Ability & Data Interpretation.
Formulas — Geometry and Mensuration
Basic Angle Relationships
Sum of angles around a point = 360°Sum of angles on a straight line = 180°Alternate interior angles are equal (when lines are parallel)Polygons
Sum of interior angles = (n-2) × 180°Each interior angle of regular polygon = (n-2) × 180°/nSum of exterior angles = 360°Triangles
Area = (1/2) × base × heightArea = √[s(s-a)(s-b)(s-c)] (Heron's formula)Area = (1/2)ab sin Ca² = b² + c² (Pythagoras theorem)Quadrilaterals
Area = (1/2) × d₁ × d₂ × sin θRectangle: Area = length × breadthRhombus: Area = (1/2) × d₁ × d₂Trapezium: Area = (1/2) × (a + b) × hGet the complete formula sheet with derivations — continue in Super Tutor
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