All Theorems of Triangles Class 9

All theorems of triangles class 9 are based on angles and sides. In this post, we will discuss important theorems related to Chapter 7 Triangles Class 9 with complete explanation.

Following are the all theorems of triangles class 9

1.            Theorem 7.1

2.            Theorem 7.2

3.            Theorem 7.3

4.            Theorem 7.4

5.            Theorem 7.5

6.            Theorem 7.6

7.            Theorem 7.7

8.            Theorem 7.8

 

  

FAQs

   1.  How many theorems are there in Triangles class 9 maths?

Ans – There are a total of eight theorems in triangles class 9 maths.

   2.  What is the SAS rule?

Ans – Two triangles are congruent if two sides and the included angle of one are equal to the corresponding sides and the included angle of the other triangle. This result is the side angles side criterion for congruence.

   3.  What is SSS rule-class 9 maths?

Ans – If three sides of a triangle are equal to the corresponding three sides of other triangles, then two triangles are congruent.

    4.  What is RHS rule triangles class 9?

Ans- If in two right triangles, the hypotenuse and one side of one triangle are equal to the hypotenuses and one side of the other triangles, then the two triangles are congruent. This congruency is known as the Right angle Hypotenuse side rule.

  5.  What is the ASA rule?

  Ans – Two triangles are congruent if two angles and the included side of one triangle are equal to two angles and the included side of other triangles. This result is the Angle -side-angle criterion for congruence.