Determine the truth value of each conditional statement. Explain reasoning. If false, give a counterexample.

1) if a number is odd, then it is divisible by 5

2) if an angle is acute, then it has a measure of 45

3) if an angle's measure is 25, then the measure of the angle's complement is 65

4) if two angels are congruent, then they are vertical angles

5) if an animal is a bird, then it is an eagle

6) if two angles are acute, then they are supplementary

7) if two lines intersect, then they form right angles