For the given true statements, what can you conclude?

If two angles are congruent, then they have the same measure.

∠A ≅ ∠B

m∠A + m∠B = 90

m∠A + m∠B = 180

m∠A = m∠B

m∠A ≠​ m∠B

From the given statements, we can conclude:

- If two angles are congruent, then they have the same measure. (∠A ≅ ∠B)

- The sum of the measures of two angles is 90 degrees. (m∠A + m∠B = 90)

- The sum of the measures of two angles is 180 degrees. (m∠A + m∠B = 180)

- The measures of ∠A and ∠B are equal. (m∠A = m∠B)

- The measures of ∠A and ∠B are not equal. (m∠A ≠​ m∠B)

For the given true statements, what can you conclude?

If two angles are congruent, then they have the same measure.

∠A ≅ ∠B

A m∠A + m∠B = 90

B m∠A + m∠B = 180

C m∠A = m∠B

D m∠A ≠​ m∠B

From the given true statements, we can conclude that:

- If two angles are congruent, then they have the same measure. (∠A ≅ ∠B)
- The measures of ∠A and ∠B are equal. (m∠A = m∠B)

Therefore, the correct conclusion is:
C. m∠A = m∠B.