Which postulate or theorem proves that these two triangles are congruent?

It is AAS because:

1. They have one shared side WZ which is reflex property   - S

2. Angle XWZ is congruent to angle YWZ because it is given  -A

3. Angle WXZ is congruent to angle WYZ because it is given  -A

SAA=AAS

Hope this helps :)

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐