Chapter 10 · Class 9 ICSE · Formula Sheet

Pythagoras Theorem Formulas — Class 9 ICSE

Prove the Pythagorean theorem and apply it to solve problems involving right triangles.

Key Formulas

Pythagoras

c^2 = a^2 + b^2

Converse

\text{If } c^2 = a^2 + b^2, \text{ then angle opposite } c \text{ is } 90°

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 9 ICSE Formulas

Rational & Irrational NumbersCompound InterestExpansionsFactorizationSimultaneous Linear EquationsIndices (Exponents)

Frequently Asked Questions

How many formulas are in Class 9 ICSE Pythagoras Theorem?+
There are 2 formulas in the Pythagoras Theorem chapter for Class 9 ICSE. Each formula is essential for solving problems in this topic.
How to remember Pythagoras Theorem 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 Pythagoras Theorem formulas enough for exams?+
Yes, these formulas cover the complete ICSE Class 9 syllabus for Pythagoras Theorem. Practice applying them to different types of questions for full exam readiness.

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