1-8 additional practice

1-8 Additional Practice _ Indirect Proof Use indirect reasoning to draw a conclusion in each situation. 1. Afactor of a whole number is a whole number that divides evenly into the given number. The number x does not does not divide evenly into 6. 2. A rectangle is a quadrilateral with four congruent angles. An isosceles trapeZOId has only two congruent angles. Write the first step of an indirect proof of each statement. 3. Prove: Ifx > 6, then le > 6. 4. Prove: A circle is a figure with no sides. 5. Prove the conditional by proving the contrapositive: For two positive integers n and m, if nm = 4, then either n or m is 1 or both are 2. 6. Understand Consider the conditional, "If a3 is positive, then a is positive." Jae wrote an indirect proof to prove the conditional. What is Jae's error? Assume a3 is negative and a is positive. a>