Make the idea your own
- 1Change the lengths of the perpendicular legs.
- 2Compare the two smaller square areas with the large square.
- 3Run the area reveal to see why lengths must be squared.
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Class 9 · Mathematics
Build Pythagoras’ squares
Interactive explanation Gamified quiz, feedback & rewards
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Suggested-level exploration · Learning goals & preparation
By the end, you can…
- Explain a² + b² = c²
- Change one input at a time and predict its effect before checking the model.
- Apply the relationship in a quiz and explain the reasoning behind your answer.
Useful preparation: Basic arithmetic, fractions and reading simple diagrams.
This topic has a suggested learning level. A matching chapter in the current NCERT edition has not been verified, so it is not labelled as syllabus coverage.
Hands-on explainer · Class 9
Build Pythagoras’ squares
Class 9
CLASS 9 · CONCEPT QUEST
Turn understanding into a small adventureBuild Pythagoras’ squares
Discover the rule, predict what happens, then solve a hands-on mission.
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The relationshipa² + b² = c²
Explain the experiment
When the goal is met: The 3–4–5 triangle works because 9 + 16 = 25. Interchanging the legs also works.