# Essential Question: Write a conditional statement in three different ways.

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Essential Question: Write a conditional statement in three different ways.

 C ONDITIONAL S TATEMENTS : S ENTENCES THAT CONTAIN BOTH A HYPOTHESIS AND A CONCLUSION.  I F -T HEN S TATEMENTS : A TYPE OF CONDITIONAL STATEMENT  H YPOTHESIS : F OLLOWS THE “ IF ” IN AN IF - THEN STATEMENT  C ONCLUSION : F OLLOWS THE “ THEN ” IN AN IF - THEN STATEMENT

 Identify the hypothesis and conclusion in the statements below:  If it is Saturday, then Elisa plays soccer Hypothesis: Conclusion:  If two lines intersect, then their intersection is a point. Hypothesis: Conclusion: It is Saturday Elisa plays soccer Two lines intersect Their intersection is a point

 A conditional statement doesn’t always follow the if-then model.  If you are a member of Congress, then you are a U.S. citizen.  All members of Congress are U.S. citizens.  You are a U.S. citizen if you are a member of Congress.  If A, then B  All A are B  B if A  Tweaking may need to be done to make your new sentences grammatically correct

 Write two other forms of the statement:  If points are collinear, then they are on the same line.  All collinear points lie on the same line Points lie on the same line if they are collinear

 C ONVERSE : A N EXCHANGE OF THE HYPOTHESIS AND CONCLUSION PARTS OF A CONDITIONAL STATEMENT.  Example: If a figure is a triangle, then it has three angles.  Converse: If a figure has three angles, then it is a triangle.  If you are at least 16 years old, then you can get a driver’s license.  a figure is a triangle it has three angles a figure has three angles it is a triangle If you can get a driver’s license, then you are at least 16 years old

 Assignment  1-4 Practice

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