I still din't understand diffrence between SAS and RHS criterion in the above Video.

**SAS Congruence criterion:**

If under a correspondence, two sides and the **angle included **between them of a triangle are equal to two corresponding sides and the **angle included** between them of another triangle, then the triangles are congruent.

In ΔABC and ΔPQR,

AC = PR

∠C = ∠P (**Included angle between the two sides**)

BC = PQ

So, by SAS congruence rule, ΔABC ΔPQR

**RHS Congruency**

The **main difference between RHS and SAS** is that RHS is applicable only in right angled triangle whereas SAS can be applicable to any given triangle.

In RHS the angle is always of measure 90º whereas in SAS the angle is always the included angle between two sides.

Hope you get it!!

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