AAS is a corner edge, two corners and another non-public edge, and two corners do not sandwich the other edge. ASA is the corner of one corner, two corners and the common side of two corners, and the two corners sandwich the common side.

2. Establish different conditions.

The edge with equal AAS must be the corresponding edge, otherwise AAS cannot be established.

Extended data:

Proof judgment of AAS:

AAS, that is, the corner edge, knows the opposite sides of two corners corresponding to two triangles, and asks whether the two triangles are congruent? Or know the opposite sides of two angles and one of them, and ask if this triangle is unique.

First, two angles are known, and the degree of the third angle can also be calculated, and then the triangle congruence can be proved according to ASA.

The proof method is as follows: ∠a and ∠b, ∠ A+∠ B+∠c = 180, so ∠c is known.

∵∠∠∠∠∠∠∠∠∠∠∠∠∠,

So the triangle is unique (ASA).

In AAS,

Given two angles of AA, it can be proved that the remaining one is equal according to the sum of the internal angles of the triangle is equal to 180.

Then because ASA can prove the congruence of triangles,

So AAS can also prove that triangles are congruent.

Baidu Encyclopedia -—AAS (one of the judgment theorems of triangle congruence)

Baidu Encyclopedia -—asa (mathematical concept "corner")