Quadrilaterals
NIOS · Class 10 · Maths
All formulas from Quadrilaterals in NIOS Class 10 Maths. Key equations, constants, and identities for board exam preparation.
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Basic Properties
Sum of interior angles = 360°
Sum of exterior angles = 360°
Types of Quadrilaterals
Parallelogram Properties
Opposite sides equal: AB = CD, AD = BC
Opposite angles equal: ∠A = ∠C, ∠B = ∠D
Adjacent angles supplementary: ∠A + ∠B = 180°
Rectangle Properties
All angles = 90°: ∠A = ∠B = ∠C = ∠D = 90°
Diagonals equal: AC = BD
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