1.   Write the inverse of the conditional ''If Deanna eats the last cookie, then Leon will buy more.''
    A. If Deanna does not eat the last cookie, then Leon will not buy more.
    B. If Deanna does not eat the last cookie, then Leon will buy more.
    C. If Deanna eats the last cookie, then Leon will not buy more.
    D. If Leon does not buy more, then Deanna did not eat the last cookie.
    Hint

  2.   Determine the contrapositive of the following if-then statement.
If three points are noncollinear, then they form a triangle.
    A. If three points are not noncollinear, then they do not form a triangle.
    B. If three points form a triangle, then they are noncollinear.
    C. If three points do not form a triangle, then they are not noncollinear.
    D. If three points do not form a triangle, then they are noncollinear.
    Hint

  3.   In the figure, points A and B are on circle C and
Write the contra positive of the true conditional.

Conditional 1: If then is a right isosceles triangle.
Conditional 2: If then divides the circle into two equal halves.
   
    A. If is a right isosceles triangle, then
    B. If does not divide the circle into two equal halves, then
    C. If then does not divide the circle into two equal halves.
    D. If is not a right isosceles triangle, then
    Hint

  4.   In order to find the contrapositive of a conditional, you must first find the _____ and then find the _____ of each part.
    A. hypothesis, converse B. inverse, negation
    C. converse, inverse D. converse, negation
    Hint

  5.   What is a valid conclusion to the following hypothesis?
If there are two points...
    A. There are two lines containing both points.
    B. There is one line containing both points.
    C. There are an infinite number of lines containing both points.
    D. There are no lines containing both points.
    Hint



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