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Make a counterexample
2x>x
If x=1, then it will prove the conjecture wrong

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

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

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

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

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

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

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

Identify the property of equality
2x+5=203x Given
2x+5+3x=203x+3x ???
Addition property of equality

identify the property of equality
5x+5=20 given
5x+55=205 ???
subtraction property of equality

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

identify the property of equality
4(11x=2)=80 Given
44x8=80 ???
Distributive property of equality

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

