What does △qxm≅△qxn and ∠qxm≅∠qxn mean?

means the two triangle are congruent.

which means that the two angles are congruent.

Step-by-step explanation:

Firstly the symbol represent the congruent that means the two objects that have the same shape and size or we can say simply the similarities between the objects ,

and the symbol represents the triangle.

that implies the triangle QXM is congruent to the triangle QXN.

The symbol represent the angle in

∴ means the two angles are congruent.