Worked Example
Revision challenge 9
For Class 7 Mathematics, explain or solve a angle sum property of triangle question from the chapter "Triangles and Its Properties". Focus on revision challenge and show the working clearly.
Step-by-step solution path
- Read the topic idea: Angle Sum Property of Triangle.
- Recall the core explanation from the chapter: Properties of triangles, angle sum, exterior angles and Pythagoras theorem.
- Use the related formula "Pythagoras theorem" as the main tool while solving.
- Write the reasoning in simple school-level language before the final answer.
Final learning answer
This example is centred on Angle Sum Property of Triangle. A strong solution should identify the correct data, apply Pythagoras theorem, and explain each transition instead of jumping directly to the answer.
Related formula
Pythagoras theorem
c² = a² + b²