Natural, Whole, and a rational number
∠QRS and ∠CDE are congruent.
∠RST and ∠DEB are congruent.
∠STQ and ∠EBC are congruent.
∠TQR and ∠BCD are congruent.
You can conclude the above angles are congruent because ∠R and ∠D has the same sign on their angle and so does ∠S and ∠E.
Answer:
The associative property is a math rule that says that the way in which factors are grouped in a multiplication problem does not change the product.
Go to Khan Academy for more.
Step-by-step explanation: