Proof Postilates and Properties and vocab Flashcards
Commutative property of addition
a+b=b+a
Commutative property of multiplication
ab=ba
Associative property of addition
(a+b)+c=a+(b+c)
Associative property of multiplication
(ab)c=a(bc)
Distributive property
A(b+c)=ab+ac
Reflective property
a=a
Transitive property
a=b b=c
Addition property of equity
a=b a+c =b+c
Symmetric property
a=b b=a
Subtraction property of equity
a=b a-c=b-c
Multiplication property of equality
a=b ac=bc
Division property of equity
a=b a/c b/c provided c dowse not = 0 also If a=b and b=c then a/c=b/d provided that c or d does not = 0
Square root property
A^2 = b then a=+-b square rooted
Zero product property
ab= 0 then a=0 and/or b0
AIA
When two lines are crossed by another line (which is called the Transversal), the pairs of angles. • on opposite sides of the transversal. • but inside the two lines. are called Alternate Interior Angles.
Altitude
An altitude of a triangle. An altitude is a line which passes through a vertex of a triangle, and meets the opposite side at right angles. A triangle has three altitudes. … The length of a perpendicular from a side of the triangle to the opposite vertex.
Angle bisector
An altitude of a triangle. An altitude is a line which passes through a vertex of a triangle, and meets the opposite side at right angles. A triangle has three altitudes. … The length of a perpendicular from a side of the triangle to the opposite vertex.