## To understand the Side-Side-Side (SSS) postulate, Side-Angle-Side (SAS) postulate, and Angle-Side-Angle (ASA) postulate, let's break them down one by one.

1. Side-Side-Side (SSS) Postulate:

The SSS postulate states that if the three sides of one triangle are congruent to the three sides of another triangle, then the triangles are congruent. In other words, if all sides of two triangles are equal in length, they must be congruent.

To determine if two triangles satisfy the SSS postulate and are congruent, you need to compare the lengths of all three sides of both triangles. If all three sides of one triangle are equal to the corresponding sides of another triangle, then the triangles are congruent.

2. Side-Angle-Side (SAS) Postulate:

The SAS postulate states that if two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.

To determine if two triangles satisfy the SAS postulate and are congruent, you need to compare the lengths of two sides and the angle between them of both triangles. If those measures are equal in both triangles, then the triangles are congruent.

3. Angle-Side-Angle (ASA) Postulate:

The ASA postulate states that if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.

To determine if two triangles satisfy the ASA postulate and are congruent, you need to compare the measures of two angles and the length of the side between those angles in both triangles. If those measures are equal in both triangles, then the triangles are congruent.

It's important to note that there are other postulates and theorems in geometry that can be used to prove triangle congruence. The SSS, SAS, and ASA postulates are just a few examples commonly used.