Answer:
Step-by-step explanation:
1. AB||DC and AB = CD Given
2. ∠1 = ∠4 If lines are parallel, then alternate interior
angles are equal.
3 .AC = AC Reflexive
4. ΔABC ≅ ΔCDA SAS
5. ∠2 = ∠3 CPCTE
2(m+n) is the answer. The question is asking for the sum of m and n then multiplying that sum by 2
The difference is the subtraction between the numbers;
15-5y
Factor out 5 because it's a common factor;
5(3-y)
