Question

select the correct answer from each drop - down menu.
a student is given $\angle qos\cong\angle rot$ and the diagram and asked to prove $m\angle qor = 56^{\circ}$.
given: $\angle qos\cong\angle rot$
prove: $m\angle qor = 56^{\circ}$
here is the students proof.

1. $\angle qos\cong\angle tor$ (given)
2. $m\angle qos = m\angle rot$ (definition of congruence)
3. $m\angle qor + m\angle ros=m\angle tos + m\angle ros$ (angle addition)
4. $m\angle qor = m\angle tos$ (subtraction property of congruence)
5. $m\angle tos = 56^{\circ}$ (given)
6. $m\angle qor = 56^{\circ}$ (subtraction property of equality)

where is the first error or skipped step in this proof?
the reason for statement drop - down is not correct because drop - down

Explanation:

Answer:

The reason for statement 4 is not correct because the subtraction property of equality should be used.