Q4: Quadrilateral Circumscribing a Circle | Tangent Property | CBSE Class 10 Maths Standard 2025

Описание: 🎯 Question 4 | CBSE Class 10 Maths Standard Sample Paper 2025 | 1 Mark

Master the property of tangents from a quadrilateral circumscribing a circle! This is Question 4 from the official CBSE Class 10 Standard Level Maths Sample Question Paper 2025 - a must-know property from the Circles chapter.

📝 QUESTION:
A quadrilateral ABCD is drawn to circumscribe a circle. If BC = 7 cm, CD = 4 cm, and AD = 3 cm, find the length of AB.
a) 3 cm
b) 4 cm
c) 6 cm
d) 7 cm

✅ SOLUTION APPROACH:
Understand quadrilateral circumscribing a circle
Apply key property: Sum of opposite sides are equal
Set up equation: AB + CD = AD + BC
Solve for AB

⏱️ VIDEO CHAPTERS:
0:00 - Introduction & Question Reading
0:31 - Understanding Quadrilateral Circumscribing Circle
1:14 - Key Property: Sum of Opposite Sides
2:09 - Final Answer & Key Takeaway

🎓 CONCEPTS COVERED:
Circles and Tangents
Quadrilateral Circumscribing a Circle
Tangent Properties
Sum of Opposite Sides Property
Geometry Problem Solving

💡 DIFFICULTY: Easy | 1 Mark Question | Property-Based

📚 CHAPTER: Circles (Chapter 10)

🔑 KEY PROPERTY:
When a quadrilateral circumscribes a circle:
AB + CD = AD + BC (Sum of opposite sides are equal)

Why? All four sides are tangents to the circle, and tangents from an external point to a circle are equal!

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CBSE Class 10 Maths Sample Paper Solutions 2025 - Standard & Basic
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👨‍🎓 WHO SHOULD WATCH THIS:
Class 10 CBSE Students (Standard Level)
Students learning Circles chapter
Anyone confused about tangent properties
Students preparing for Board Exams 2025

💡 PRO TIP: This property works ONLY when the quadrilateral circumscribes (surrounds) the circle, not when the circle passes through the vertices!

💬 DOUBTS? Drop them in the comments below!
👍 Like if this property is now crystal clear
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✨ Answer: AB = 6 cm (Option C)

Good luck with your preparation! 🌟