Chapter 10 · Class 8 ICSE · Formula Sheet

Quadrilaterals Formulas — Class 8 ICSE

Study properties of parallelograms, rectangles, rhombuses, squares, and trapeziums.

Key Formulas

Angle Sum (Quadrilateral)

360°

Angle Sum (Polygon)

(n-2) \times 180°

Each Angle (Regular Polygon)

\dfrac{(n-2) \times 180°}{n}

Exterior Angle Sum

360°

Each Exterior Angle

\dfrac{360°}{n}

Worked Examples

1Using: Application

Apply the key formula from this topic to a sample problem.

Step 1: Identify the formula.

Step 2: Substitute the values.

Step 3: Simplify to get the answer.

Answer: See solution above

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More Class 8 ICSE Formulas

Rational NumbersExponents & PowersSquares & Square RootsCubes & Cube RootsAlgebraic ExpressionsFactorization

Frequently Asked Questions

How many formulas are in Class 8 ICSE Quadrilaterals?+
There are 5 formulas in the Quadrilaterals chapter for Class 8 ICSE. Each formula is essential for solving problems in this topic.
How to remember Quadrilaterals formulas easily?+
Practice regularly with worked examples, group related formulas together, and use SparkEd's interactive practice mode to reinforce your memory through problem-solving.
Are these Quadrilaterals formulas enough for exams?+
Yes, these formulas cover the complete ICSE Class 8 syllabus for Quadrilaterals. Practice applying them to different types of questions for full exam readiness.

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