Essential Question: Write a conditional statement in three

different ways.

CONDITIONAL STATEMENTS: SENTENCES THAT CONTAIN BOTH A HYPOTHESIS AND A CONCLUSION.

IF-THEN STATEMENTS: A TYPE OF CONDITIONAL STATEMENT

HYPOTHESIS: FOLLOWS THE “IF” IN AN IF-THEN STATEMENT

CONCLUSION: FOLLOWS 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 SaturdayElisa plays soccer

Two lines intersectTheir 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 linePoints lie on the same line if they arecollinear

CONVERSE: AN 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 triangleit has three angles

a figure has three anglesit is a triangle

If you can get a driver’s license, then you are at least 16 years old

Assignment1-4 Practice