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📘 Class 9 Maths Chapter 10 – Heron’s Formula & All Triangle Area Formulas | Full Concepts in One Video 🔺

Welcome to this complete video on Chapter 10: Heron’s Formula from Class 9 NCERT Maths!
In this video, we explain Heron’s Formula in detail and also cover all important formulas to find the area of any triangle – whether it's right-angled, equilateral, isosceles, or scalene.

✅ What’s Covered in This Video:

Concept of Heron’s Formula

Derivation and explanation of Heron’s Formula

Area formulas for all types of triangles:

Right-angled triangle

Equilateral triangle

Isosceles triangle

Scalene triangle


Step-by-step solved examples

NCERT exercise and extra questions

Real-life applications and tips


📐 Key Formulas You’ll Learn:

1. Heron’s Formula:
Area = √[s(s–a)(s–b)(s–c)], where s = (a + b + c)/2


2. Right Triangle:
Area = ½ × base × height


3. Equilateral Triangle:
Area = (√3 / 4) × side²


4. Isosceles Triangle:
Area = ½ × base × height (or use Heron's Formula)


5. General Formula Using Trigonometry:
Area = ½ × a × b × sin(C) (Optional for advanced students)



📊 Why Watch This Video?

Covers the entire chapter in one place

Ideal for exam preparation & revision

Easy explanations for concept clarity

Boosts confidence in area-related questions


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