RS Aggarwal Solutions Class 10 Chapter 4 - Triangles (Ex 4B) Exercise 4.2 - Free PDF
FAQs on RS Aggarwal Solutions Class 10 Chapter 4 - Triangles (Ex 4B) Exercise 4.2
1. Which is the most important theorem in the Chapter Triangles Class 10?
The most important theorem of Triangles in Class 10 is Pythagoras Theorem. According to the Pythagoras theorem,” The area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides.”
\[c^{2}=a^{2}+b^{2}\]
Where a and b are the other sides of the triangle and c is the hypotenuse.
For the theorem, students can refer to the Pythagoras Theorem provided by Vedantu. Vedantu has also provided geometrical proof of the theorem, its examples, and applications.
2. What are the formulas used to find the areas of triangles?
The area of a triangle formula, \[\text{Area}=\frac{1}{2}\times \text{Base} \times \text{Perpendicular Height}\]
The area of a right angled-triangle\[\text{Area of Right Triangle}=\frac{1}{2}\times \text{Base} \times \text{Height}\]
The area of an equilateral triangle
\[\text{Area of Equilateral Triangle}=\frac{\sqrt{3}}{4}\times side^{2}\]
Area of an isosceles triangle, \[\text{Area of Isosceles Triangle}=\frac{1}{4}b\sqrt{4a^{2}-b^{2}}\]
Where a is the measure of one of the equal sides and b is the base.
3. What are the important questions for Class 10 Triangles?
The Chapter Triangles is a very important chapter in Class 10 therefore the students need to learn about all the characteristics and classifications of triangles first before solving the questions. Students should memorize all the important formulas along with the Pythagoras theorem in the Chapter Triangles. Vedantu has provided some important questions for CBSE Class 10 of Chapter 6 Triangles, which the students can refer to after they solve all the problems given in the textbooks.
