2 Would be your answer if the units are positive.
Answer:
2. Substitution property
3. Given
4. Definition of congruent angles
5. Substitution property
6. Subtraction property of equality
7. Definition of congruent angles
8. Given
9. Definition of equilateral triangle
11. SAS (10, 7, 9)
Step-by-step explanation:
Answer: 60 adults and 60 students
Step-by-step explanation:
I think you might need to be more specific..
