Lines
two lines that are the same distance apart and will never touch
What is parallel lines
This is the term for a 90 degree angle
What is right angle
a=a, <A =<A
What is reflexive property of equality
When writing a two column proof, you have ___________ and __________ at the top of each column
What is statements and reasons
A shape that has 6 sides is called
What is a hexagon
lines that intersect to form a right angle
What is perpendicular
An angle that is less than 90 degrees
What is acute
If a=b and b=c then a=c
What is Transitive property of equality
When writing properties, you should always make sure to do what?
Write out the property and add if it is of congruence or equality
A shape with 5 sides is called
What is a pentagon
If a=b then a+c= b+c
What is addition property of equality
What is a theorem
What a statement that needs to be proven
A linear pair has one angle that is 135 degrees. What is the measure of the other angle
What is 45 degrees
What is Angle Addition Postulate
If a=b, then a-c=b-c
What is subtraction property of equality
How many steps can a proof have?
Anything from 2 to infinite steps, in class we have seen 9 steps
A quadrilateral has 3 angles measuring 90 degrees, 100 degrees, and 70 degrees. What is the measure of the 4th angle? Hint: it adds up to 360 degrees
What is 100 degrees
When two segments are added together it is known as what postulate
What is segment addition postulate
AB= 5 and AB + BC = AC, then 5 + BC = AC
What substitution property of equality
Given: B is the midpoint of AC AB= 12 and BC= 2x +2
Prove x=5
Show the proof
A boat has a sail with one pair of perpendicular lines, and two sides the same length. What kind of triangle is it?
What is Right, Isosceles