Download Geometry Reference Sheet – Math Lab Block 1

Geometry Reference Sheet – Math Lab
Geometry Postulates, Theorems, Definitions
Reflexive Property of Congruence:
Symmetric Property of Congruence:
Transitive Property of Congruence:
Reflexive Property of Equality
Symmetric Property of equality
Transitive Property of equality
Substitution property of equality
AB ~ AB
AB ~ BA, or if < 1 ~ < 2, then < 2 ~ < 1
if < 1 ~ < 2, < 2 ~ < 3, then < 1 ~ < 3
<A = <A, 25=25,AB=AB
A=B, then B=A
A=B, B=C then A=C
if a = b, then b can be subbed in for a.
Conditional Statement
Converse Statement
Inverse Statement
Contra positive Statement
Bi conditional Statement
Segment Addition Postulate
Segment bisector
Midpoint
If P then Q
If Q then P
If –P then -Q
If -Q then -P
P if and only if Q
AB + BC = AC
See midpoint.
If point B is the midpoint of AC, then AB =
BC… it cuts it in half.
If <S is in the interior of <PQR, then
m<PQS + m<SQR = m<PQR
JK bisects <LJM, then <LJK = <KJM
m<a + m<b = 90
m<1 + m<2 = 180
Adjacent angles that add up to 180
Angle Addition Postulate
Angle bisector
Complementary angles
Supplementary angles
Linear Pair