Geometry Mid-Year Test

Collinear

Collinear

Points that lie on the same line

Non-Collinear

Points that do not lie on the same line

Coplanar

Points that lie on the same plane

Non-Coplanar

Points that do not lie on the same plane

Conjunction

∧ “And”

Disjunction

∨ “Or”

Conditional

p→q

Inverse

~p→~q

Converse

q→p

Contrapositive

~q→~p

Bi-Conditional

p↔q “If and only if”

Law of Detachment

If p then q

Law of Syllogism

If p then q.

If q then r.

Symmetric Property (of = or ≅)

If <ABC ≅ <CBD, then <CBD ≅ <ABC

Substitution Property of Equality

If VW+WY=ZY, and VW+WY=XZ, then XZ=ZY

Definition of Midpoint

If S is between R and T, then RS+ST=RT

Subtraction Property of Equality

If JK+KL=MN+KL, then JK=MN

Transitive Property (of = or ≅)

If m<A=m<C, and m<C=m<D, then m<A=m<D

Addition Property of Equality

If PQ=QT, then PQ+RS=QT+RS

Reflexive Property (of = or ≅)

m<DEF=m<DEF

Multiplication Property of Equality

If 1/2XZ=XY, then XZ=2XY

Definition of Congruence

If m<LMN=m<MNP, then <LMN≅<MNP