Exercise 10 Page 447

To write the statement in if-then form, we have to identify the statement's hypothesis and conclusion. In the if-then form, the hypothesis comes after if and the conclusion comes after then. Hypothesis:&If... Conclusion:&then...The given statement says that Two right angles are supplementary angles. Here, we start with having two right angles and conclude that these are supplementary. We can identify the hypothesis and conclusion. Two right angles are supplementary angles. Now we can write the statement in if-then form. If two angles are right, then they are supplementary angles.