# Math Chapter 2 processing

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1. Make a counterexample

2x>x
If x=-1, then it will prove the conjecture wrong

• 2(-1)>-1
• -2>-1 false
2. Make a conditional statement for the definition of a right angle

Right angle- the measure of the angle is 90 degrees
If it is a right angle, then its measure of the angle is 90degrees
3. Make a converse statement for the definition of a right angle

Right angle- the measure of the angle is 90 degrees
If the measure of a angle is 90 degrees, then it is a right angle
4. make a inverse statement about the definition of a right angle

Right angle- the measure of the angle is 90 degrees
If it is not a right angle, then the measure of the angle is not 90 degrees
5. wright a contrapositive statement about the definition of a right angle

Right angle- the measure of the angle is 90 degrees
If its measure is not 90 degrees, then it is not a right angle
6. wright a biconditional statement about the definition of a right angle

Right angle- the measure of the angle is 90 degrees
a angle is a right angle if and only of the measure of the angle is 90 degrees
7. Use the Law of Detachment to make a valid conclusion about the ture statement

If two statements have the same length, then they are congruent. you know that
BC=XY
Because BC=XY satisfies the hypothesis of a true congruent statement, the conclusion is also true, so, (segment)BC is congruent to (segment)XY
8. use the law of syllogism to wright a new conditional statement

If rick takes chemistry this year, then jessie will be rick's lab partner.
If jessie is rick's lab partner, then rick will get an A in chemistry
If rick takes chemistry this year, them he will get an A in chemistry
9. Identify the property of equality

2x+5=20-3x Given
2x+5+3x=20-3x+3x ???
10. identify the property of equality

5x+5=20 given
5x+5-5=20-5 ???
subtraction property of equality
11. identify the property of equality

5x=15 Given
5x/5=15/5 ???
Division property of equality
12. identify the property of equality

-4(11x=2)=80 Given
-44x-8=80 ???
Distributive property of equality
13. If you saw m<1=90 degrees and m<2=90 degrees as a statement, what would you put for a reason?
definition of right angle
 Author: deamon ID: 38818 Card Set: Math Chapter 2 processing Updated: 2010-10-01 00:55:53 Tags: Geometry Chapter Folders: Description: How to put math skills to your use Show Answers: