Chapter 9 Congruence of Triangles and Inequalities in a Triangle


About RS Aggarwal Solutions Class 9 Maths Chapter 9 Congruence of Triangles and Inequalities in a Triangle

Congruence of Triangles:

Congruence refers to the equality of shape and size. In the "Congruence of Triangles" chapter of Class 9 CBSE mathematics, students learn about the conditions and criteria for establishing the congruence of triangles. Here are some key points: Check out all the solutions of RS Aggarwal for class 9 Maths and to get the best Home tuition for class 9 Maths find the tutors. 

Congruence Criteria:

a. Side-Side-Side (SSS) Criterion: If three sides of one triangle are equal to the corresponding three sides of another triangle, then the triangles are congruent.

b. Side-Angle-Side (SAS) Criterion: If two sides and the included angle of one triangle are equal to the corresponding two sides and the included angle of another triangle, then the triangles are congruent.

c. Angle-Side-Angle (ASA) Criterion: If two angles and the included side of one triangle are equal to the corresponding two angles and the included side of another triangle, then the triangles are congruent.

d. Angle-Angle-Side (AAS) Criterion: If two angles and a non-included side of one triangle are equal to the corresponding two angles and the non-included side of another triangle, then the triangles are congruent.

e. Hypotenuse-Leg (HL) Criterion: If the hypotenuse and one leg of a right-angled triangle are equal to the corresponding hypotenuse and leg of another right-angled triangle, then the triangles are congruent.

Exercise of RS Aggarwal Class 9 Chapter 9 Congruence of Triangles and Inequalities in a Triangle

Chapter 9 Exercise 9A

Chapter 9 Exercise 9B

Chapter 9 Multiple Choice Questions (MCQs)

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